Merge pull request #1632 from luke-jr/spelling

Fix spelling and grammar errors

36 files changed, 92 insertions, 92 deletions

diff --git a/src/addrman.h b/src/addrman.h
index 0392654366..7c141c427b 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -117,7 +117,7 @@ public:
 //    * Bucket selection is based on cryptographic hashing, using a randomly-generated 256-bit key, which should not
 //      be observable by adversaries.
 //    * Several indexes are kept for high performance. Defining DEBUG_ADDRMAN will introduce frequent (and expensive)
-//      consistency checks for the entire datastructure.
+//      consistency checks for the entire data structure.
 
 // total number of buckets for tried addresses
 #define ADDRMAN_TRIED_BUCKET_COUNT 64
@@ -174,13 +174,13 @@ private:
     // last used nId
     int nIdCount;
 
-    // table with information about all nId's
+    // table with information about all nIds
     std::map<int, CAddrInfo> mapInfo;
 
     // find an nId based on its network address
     std::map<CNetAddr, int> mapAddr;
 
-    // randomly-ordered vector of all nId's
+    // randomly-ordered vector of all nIds
     std::vector<int> vRandom;
 
     // number of "tried" entries
@@ -253,8 +253,8 @@ public:
         // * nNew
         // * nTried
         // * number of "new" buckets
-        // * all nNew addrinfo's in vvNew
-        // * all nTried addrinfo's in vvTried
+        // * all nNew addrinfos in vvNew
+        // * all nTried addrinfos in vvTried
         // * for each bucket:
         //   * number of elements
         //   * for each element: index
diff --git a/src/base58.h b/src/base58.h
index 215fd33324..fc8c8aa5de 100644
--- a/src/base58.h
+++ b/src/base58.h
@@ -10,7 +10,7 @@
 //      could be used to create visually identical looking account numbers.
 // - A string with non-alphanumeric characters is not as easily accepted as an account number.
 // - E-mail usually won't line-break if there's no punctuation to break at.
-// - Doubleclicking selects the whole number as one word if it's all alphanumeric.
+// - Double-clicking selects the whole number as one word if it's all alphanumeric.
 //
 #ifndef BITCOIN_BASE58_H
 #define BITCOIN_BASE58_H
diff --git a/src/bitcoinrpc.cpp b/src/bitcoinrpc.cpp
index 3af298a58b..675c8462ea 100644
--- a/src/bitcoinrpc.cpp
+++ b/src/bitcoinrpc.cpp
@@ -1881,7 +1881,7 @@ Value getwork(const Array& params, bool fHelp)
         // Save
         mapNewBlock[pblock->hashMerkleRoot] = make_pair(pblock, pblock->vtx[0].vin[0].scriptSig);
 
-        // Prebuild hash buffers
+        // Pre-build hash buffers
         char pmidstate[32];
         char pdata[128];
         char phash1[64];
@@ -2194,7 +2194,7 @@ string rfc1123Time()
     time(&now);
     struct tm* now_gmt = gmtime(&now);
     string locale(setlocale(LC_TIME, NULL));
-    setlocale(LC_TIME, "C"); // we want posix (aka "C") weekday/month strings
+    setlocale(LC_TIME, "C"); // we want POSIX (aka "C") weekday/month strings
     strftime(buffer, sizeof(buffer), "%a, %d %b %Y %H:%M:%S +0000", now_gmt);
     setlocale(LC_TIME, locale.c_str());
     return string(buffer);
@@ -2388,7 +2388,7 @@ bool ClientAllowed(const boost::asio::ip::address& address)
     if (address == asio::ip::address_v4::loopback()
      || address == asio::ip::address_v6::loopback()
      || (address.is_v4()
-         // Chech whether IPv4 addresses match 127.0.0.0/8 (loopback subnet)
+         // Check whether IPv4 addresses match 127.0.0.0/8 (loopback subnet)
       && (address.to_v4().to_ulong() & 0xff000000) == 0x7f000000))
         return true;
 
@@ -2565,7 +2565,7 @@ static void RPCAcceptHandler(boost::shared_ptr< basic_socket_acceptor<Protocol,
 {
     vnThreadsRunning[THREAD_RPCLISTENER]++;
 
-    // Immediately start accepting new connections, except when we're canceled or our socket is closed.
+    // Immediately start accepting new connections, except when we're cancelled or our socket is closed.
     if (error != asio::error::operation_aborted
      && acceptor->is_open())
         RPCListen(acceptor, context, fUseSSL);
@@ -2698,7 +2698,7 @@ void ThreadRPCServer2(void* parg)
     }
     catch(boost::system::system_error &e)
     {
-        uiInterface.ThreadSafeMessageBox(strprintf(_("An error occured while setting up the RPC port %i for listening: %s"), endpoint.port(), e.what()),
+        uiInterface.ThreadSafeMessageBox(strprintf(_("An error occurred while setting up the RPC port %i for listening: %s"), endpoint.port(), e.what()),
                              _("Error"), CClientUIInterface::OK | CClientUIInterface::MODAL);
         StartShutdown();
         return;
@@ -3105,7 +3105,7 @@ int CommandLineRPC(int argc, char *argv[])
 int main(int argc, char *argv[])
 {
 #ifdef _MSC_VER
-    // Turn off microsoft heap dump noise
+    // Turn off Microsoft heap dump noise
     _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
     _CrtSetReportFile(_CRT_WARN, CreateFile("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
 #endif
diff --git a/src/crypter.cpp b/src/crypter.cpp
index 4f37575a6a..411a1ee4c1 100644
--- a/src/crypter.cpp
+++ b/src/crypter.cpp
@@ -17,7 +17,7 @@ bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::v
     if (nRounds < 1 || chSalt.size() != WALLET_CRYPTO_SALT_SIZE)
         return false;
 
-    // Try to keep the keydata out of swap (and be a bit over-careful to keep the IV that we don't even use out of swap)
+    // Try to keep the key data out of swap (and be a bit over-careful to keep the IV that we don't even use out of swap)
     // Note that this does nothing about suspend-to-disk (which will put all our key data on disk)
     // Note as well that at no point in this program is any attempt made to prevent stealing of keys by reading the memory of the running process.  
     mlock(&chKey[0], sizeof chKey);
@@ -44,7 +44,7 @@ bool CCrypter::SetKey(const CKeyingMaterial& chNewKey, const std::vector<unsigne
     if (chNewKey.size() != WALLET_CRYPTO_KEY_SIZE || chNewIV.size() != WALLET_CRYPTO_KEY_SIZE)
         return false;
 
-    // Try to keep the keydata out of swap
+    // Try to keep the key data out of swap
     // Note that this does nothing about suspend-to-disk (which will put all our key data on disk)
     // Note as well that at no point in this program is any attempt made to prevent stealing of keys by reading the memory of the running process.  
     mlock(&chKey[0], sizeof chKey);
diff --git a/src/init.cpp b/src/init.cpp
index c8e0437d26..3235bf5833 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -83,7 +83,7 @@ void Shutdown(void* parg)
         printf("Bitcoin exited\n\n");
         fExit = true;
 #ifndef QT_GUI
-        // ensure non UI client get's exited here, but let Bitcoin-Qt reach return 0; in bitcoin.cpp
+        // ensure non-UI client gets exited here, but let Bitcoin-Qt reach 'return 0;' in bitcoin.cpp
         exit(0);
 #endif
     }
@@ -304,12 +304,12 @@ bool AppInit2()
 {
     // ********************************************************* Step 1: setup
 #ifdef _MSC_VER
-    // Turn off microsoft heap dump noise
+    // Turn off Microsoft heap dump noise
     _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
     _CrtSetReportFile(_CRT_WARN, CreateFileA("NUL", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0));
 #endif
 #if _MSC_VER >= 1400
-    // Disable confusing "helpful" text message on abort, ctrl-c
+    // Disable confusing "helpful" text message on abort, Ctrl-C
     _set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
 #endif
 #ifndef WIN32
diff --git a/src/irc.cpp b/src/irc.cpp
index a790d3f4f9..50c6a5b4db 100644
--- a/src/irc.cpp
+++ b/src/irc.cpp
@@ -207,7 +207,7 @@ void ThreadIRCSeed(void* parg)
 
 void ThreadIRCSeed2(void* parg)
 {
-    /* Dont advertise on IRC if we don't allow incoming connections */
+    /* Don't advertise on IRC if we don't allow incoming connections */
     if (mapArgs.count("-connect") || fNoListen)
         return;
 
diff --git a/src/key.cpp b/src/key.cpp
index c943a38ea6..76c45d0635 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -48,7 +48,7 @@ err:
 
 // Perform ECDSA key recovery (see SEC1 4.1.6) for curves over (mod p)-fields
 // recid selects which key is recovered
-// if check is nonzero, additional checks are performed
+// if check is non-zero, additional checks are performed
 int ECDSA_SIG_recover_key_GFp(EC_KEY *eckey, ECDSA_SIG *ecsig, const unsigned char *msg, int msglen, int recid, int check)
 {
     if (!eckey) return 0;
diff --git a/src/main.cpp b/src/main.cpp
index a780c5b117..e7095c7001 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -564,7 +564,7 @@ bool CTxMemPool::accept(CTxDB& txdb, CTransaction &tx, bool fCheckInputs,
 
         // Continuously rate-limit free transactions
         // This mitigates 'penny-flooding' -- sending thousands of free transactions just to
-        // be annoying or make other's transactions take longer to confirm.
+        // be annoying or make others' transactions take longer to confirm.
         if (nFees < MIN_RELAY_TX_FEE)
         {
             static CCriticalSection cs;
@@ -1039,7 +1039,7 @@ bool CTransaction::DisconnectInputs(CTxDB& txdb)
     // Remove transaction from index
     // This can fail if a duplicate of this transaction was in a chain that got
     // reorganized away. This is only possible if this transaction was completely
-    // spent, so erasing it would be a no-op anway.
+    // spent, so erasing it would be a no-op anyway.
     txdb.EraseTxIndex(*this);
 
     return true;
@@ -1102,7 +1102,7 @@ bool CTransaction::FetchInputs(CTxDB& txdb, const map<uint256, CTxIndex>& mapTes
         }
     }
 
-    // Make sure all prevout.n's are valid:
+    // Make sure all prevout.n indexes are valid:
     for (unsigned int i = 0; i < vin.size(); i++)
     {
         const COutPoint prevout = vin[i].prevout;
@@ -1338,7 +1338,7 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck)
     // being sent to another address.
     // See BIP30 and http://r6.ca/blog/20120206T005236Z.html for more information.
     // This logic is not necessary for memory pool transactions, as AcceptToMemoryPool
-    // already refuses previously-known transaction id's entirely.
+    // already refuses previously-known transaction ids entirely.
     // This rule applies to all blocks whose timestamp is after March 15, 2012, 0:00 UTC.
     int64 nBIP30SwitchTime = 1331769600;
     bool fEnforceBIP30 = (pindex->nTime > nBIP30SwitchTime);
@@ -1604,7 +1604,7 @@ bool CBlock::SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew)
             return error("SetBestChain() : Reorganize failed");
         }
 
-        // Connect futher blocks
+        // Connect further blocks
         BOOST_REVERSE_FOREACH(CBlockIndex *pindex, vpindexSecondary)
         {
             CBlock block;
@@ -1769,7 +1769,7 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
     if (nSigOps > MAX_BLOCK_SIGOPS)
         return DoS(100, error("CheckBlock() : out-of-bounds SigOpCount"));
 
-    // Check merkleroot
+    // Check merkle root
     if (fCheckMerkleRoot && hashMerkleRoot != BuildMerkleTree())
         return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
 
@@ -1805,7 +1805,7 @@ bool CBlock::AcceptBlock()
 
     // Check that the block chain matches the known block chain up to a checkpoint
     if (!Checkpoints::CheckBlock(nHeight, hash))
-        return DoS(100, error("AcceptBlock() : rejected by checkpoint lockin at %d", nHeight));
+        return DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight));
 
     // Write block to history file
     if (!CheckDiskSpace(::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION)))
@@ -1963,7 +1963,7 @@ FILE* AppendBlockFile(unsigned int& nFileRet)
             return NULL;
         if (fseek(file, 0, SEEK_END) != 0)
             return NULL;
-        // FAT32 filesize max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
+        // FAT32 file size max 4GB, fseek and ftell max 2GB, so we must stay under 2GB
         if (ftell(file) < 0x7F000000 - MAX_SIZE)
         {
             nFileRet = nCurrentBlockFile;
@@ -2055,7 +2055,7 @@ bool LoadBlockIndex(bool fAllowNew)
 
 void PrintBlockTree()
 {
-    // precompute tree structure
+    // pre-compute tree structure
     map<CBlockIndex*, vector<CBlockIndex*> > mapNext;
     for (map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.begin(); mi != mapBlockIndex.end(); ++mi)
     {
@@ -2108,7 +2108,7 @@ void PrintBlockTree()
 
         PrintWallets(block);
 
-        // put the main timechain first
+        // put the main time-chain first
         vector<CBlockIndex*>& vNext = mapNext[pindex];
         for (unsigned int i = 0; i < vNext.size(); i++)
         {
@@ -2347,7 +2347,7 @@ bool static AlreadyHave(CTxDB& txdb, const CInv& inv)
 
 
 // The message start string is designed to be unlikely to occur in normal data.
-// The characters are rarely used upper ascii, not valid as UTF-8, and produce
+// The characters are rarely used upper ASCII, not valid as UTF-8, and produce
 // a large 4-byte int at any alignment.
 unsigned char pchMessageStart[4] = { 0xf9, 0xbe, 0xb4, 0xd9 };
 
@@ -3030,12 +3030,12 @@ bool ProcessMessages(CNode* pfrom)
         {
             if (strstr(e.what(), "end of data"))
             {
-                // Allow exceptions from underlength message on vRecv
+                // Allow exceptions from under-length message on vRecv
                 printf("ProcessMessages(%s, %u bytes) : Exception '%s' caught, normally caused by a message being shorter than its stated length\n", strCommand.c_str(), nMessageSize, e.what());
             }
             else if (strstr(e.what(), "size too large"))
             {
-                // Allow exceptions from overlong size
+                // Allow exceptions from over-long size
                 printf("ProcessMessages(%s, %u bytes) : Exception '%s' caught\n", strCommand.c_str(), nMessageSize, e.what());
             }
             else
@@ -3284,9 +3284,9 @@ unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1
     unsigned int& nNonce = *(unsigned int*)(pdata + 12);
     for (;;)
     {
-        // Crypto++ SHA-256
+        // Crypto++ SHA256
         // Hash pdata using pmidstate as the starting state into
-        // preformatted buffer phash1, then hash phash1 into phash
+        // pre-formatted buffer phash1, then hash phash1 into phash
         nNonce++;
         SHA256Transform(phash1, pdata, pmidstate);
         SHA256Transform(phash, phash1, pSHA256InitState);
@@ -3623,7 +3623,7 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int&
 void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1)
 {
     //
-    // Prebuild hash buffers
+    // Pre-build hash buffers
     //
     struct
     {
@@ -3751,7 +3751,7 @@ void static BitcoinMiner(CWallet *pwallet)
 
 
         //
-        // Prebuild hash buffers
+        // Pre-build hash buffers
         //
         char pmidstatebuf[32+16]; char* pmidstate = alignup<16>(pmidstatebuf);
         char pdatabuf[128+16];    char* pdata     = alignup<16>(pdatabuf);
@@ -3776,7 +3776,7 @@ void static BitcoinMiner(CWallet *pwallet)
             unsigned int nHashesDone = 0;
             unsigned int nNonceFound;
 
-            // Crypto++ SHA-256
+            // Crypto++ SHA256
             nNonceFound = ScanHash_CryptoPP(pmidstate, pdata + 64, phash1,
                                             (char*)&hash, nHashesDone);
 
diff --git a/src/main.h b/src/main.h
index 301badcca9..9b58b713d0 100644
--- a/src/main.h
+++ b/src/main.h
@@ -552,7 +552,7 @@ public:
             if (nBlockSize == 1)
             {
                 // Transactions under 10K are free
-                // (about 4500bc if made of 50bc inputs)
+                // (about 4500 BTC if made of 50 BTC inputs)
                 if (nBytes < 10000)
                     nMinFee = 0;
             }
diff --git a/src/net.cpp b/src/net.cpp
index 1155503f05..1c87eb9685 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -357,7 +357,7 @@ bool GetMyExternalIP(CNetAddr& ipRet)
     {
         // We should be phasing out our use of sites like these.  If we need
         // replacements, we should ask for volunteers to put this simple
-        // php file on their webserver that prints the client IP:
+        // php file on their web server that prints the client IP:
         //  <?php echo $_SERVER["REMOTE_ADDR"]; ?>
         if (nHost == 1)
         {
@@ -497,14 +497,14 @@ CNode* ConnectNode(CAddress addrConnect, const char *pszDest, int64 nTimeout)
         /// debug print
         printf("connected %s\n", pszDest ? pszDest : addrConnect.ToString().c_str());
 
-        // Set to nonblocking
+        // Set to non-blocking
 #ifdef WIN32
         u_long nOne = 1;
         if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR)
-            printf("ConnectSocket() : ioctlsocket nonblocking setting failed, error %d\n", WSAGetLastError());
+            printf("ConnectSocket() : ioctlsocket non-blocking setting failed, error %d\n", WSAGetLastError());
 #else
         if (fcntl(hSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
-            printf("ConnectSocket() : fcntl nonblocking setting failed, error %d\n", errno);
+            printf("ConnectSocket() : fcntl non-blocking setting failed, error %d\n", errno);
 #endif
 
         // Add node
@@ -1596,7 +1596,7 @@ void ThreadOpenAddedConnections2(void* parg)
     }
 }
 
-// if succesful, this moves the passed grant to the constructed node
+// if successful, this moves the passed grant to the constructed node
 bool OpenNetworkConnection(const CAddress& addrConnect, CSemaphoreGrant *grantOutbound, const char *strDest, bool fOneShot)
 {
     //
@@ -1773,7 +1773,7 @@ bool BindListenPort(const CService &addrBind, string& strError)
 
 
 #ifdef WIN32
-    // Set to nonblocking, incoming connections will also inherit this
+    // Set to non-blocking, incoming connections will also inherit this
     if (ioctlsocket(hListenSocket, FIONBIO, (u_long*)&nOne) == SOCKET_ERROR)
 #else
     if (fcntl(hListenSocket, F_SETFL, O_NONBLOCK) == SOCKET_ERROR)
@@ -1834,7 +1834,7 @@ void static Discover()
         return;
 
 #ifdef WIN32
-    // Get local host ip
+    // Get local host IP
     char pszHostName[1000] = "";
     if (gethostname(pszHostName, sizeof(pszHostName)) != SOCKET_ERROR)
     {
diff --git a/src/net.h b/src/net.h
index fc120da806..3717c4e634 100644
--- a/src/net.h
+++ b/src/net.h
@@ -49,7 +49,7 @@ enum
     LOCAL_BIND,   // address explicit bound to
     LOCAL_UPNP,   // address reported by UPnP
     LOCAL_IRC,    // address reported by IRC (deprecated)
-    LOCAL_HTTP,   // address reported by whatismyip.com and similars
+    LOCAL_HTTP,   // address reported by whatismyip.com and similar
     LOCAL_MANUAL, // address explicitly specified (-externalip=)
 
     LOCAL_MAX
@@ -181,7 +181,7 @@ protected:
     int nRefCount;
 
     // Denial-of-service detection/prevention
-    // Key is ip address, value is banned-until-time
+    // Key is IP address, value is banned-until-time
     static std::map<CNetAddr, int64> setBanned;
     static CCriticalSection cs_setBanned;
     int nMisbehavior;
diff --git a/src/netbase.cpp b/src/netbase.cpp
index 0a54fdf46c..b66c366641 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -702,7 +702,7 @@ bool CNetAddr::IsMulticast() const
 
 bool CNetAddr::IsValid() const
 {
-    // Clean up 3-byte shifted addresses caused by garbage in size field
+    // Cleanup 3-byte shifted addresses caused by garbage in size field
     // of addr messages from versions before 0.2.9 checksum.
     // Two consecutive addr messages look like this:
     // header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
@@ -851,13 +851,13 @@ std::vector<unsigned char> CNetAddr::GetGroup() const
         nClass = NET_IPV4;
         nStartByte = 12;
     }
-    // for 6to4 tunneled addresses, use the encapsulated IPv4 address
+    // for 6to4 tunnelled addresses, use the encapsulated IPv4 address
     else if (IsRFC3964())
     {
         nClass = NET_IPV4;
         nStartByte = 2;
     }
-    // for Teredo-tunneled IPv6 addresses, use the encapsulated IPv4 address
+    // for Teredo-tunnelled IPv6 addresses, use the encapsulated IPv4 address
     else if (IsRFC4380())
     {
         vchRet.push_back(NET_IPV4);
@@ -954,7 +954,7 @@ int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
         default:         return REACH_DEFAULT;
         case NET_TEREDO: return REACH_TEREDO;
         case NET_IPV4:   return REACH_IPV4;
-        case NET_IPV6:   return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunneled
+        case NET_IPV6:   return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunnelled
         }
     case NET_TOR:
         switch(ourNet) {
diff --git a/src/netbase.h b/src/netbase.h
index f097d7f5ae..07ca12cb96 100644
--- a/src/netbase.h
+++ b/src/netbase.h
@@ -50,9 +50,9 @@ class CNetAddr
         bool IsRFC1918() const; // IPv4 private networks (10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12)
         bool IsRFC3849() const; // IPv6 documentation address (2001:0DB8::/32)
         bool IsRFC3927() const; // IPv4 autoconfig (169.254.0.0/16)
-        bool IsRFC3964() const; // IPv6 6to4 tunneling (2002::/16)
+        bool IsRFC3964() const; // IPv6 6to4 tunnelling (2002::/16)
         bool IsRFC4193() const; // IPv6 unique local (FC00::/15)
-        bool IsRFC4380() const; // IPv6 Teredo tunneling (2001::/32)
+        bool IsRFC4380() const; // IPv6 Teredo tunnelling (2001::/32)
         bool IsRFC4843() const; // IPv6 ORCHID (2001:10::/28)
         bool IsRFC4862() const; // IPv6 autoconfig (FE80::/64)
         bool IsRFC6052() const; // IPv6 well-known prefix (64:FF9B::/96)
diff --git a/src/qt/askpassphrasedialog.cpp b/src/qt/askpassphrasedialog.cpp
index 22cab47425..1eccaa9f8e 100644
--- a/src/qt/askpassphrasedialog.cpp
+++ b/src/qt/askpassphrasedialog.cpp
@@ -177,7 +177,7 @@ void AskPassphraseDialog::accept()
 
 void AskPassphraseDialog::textChanged()
 {
-    // Validate input, set Ok button to enabled when accepable
+    // Validate input, set Ok button to enabled when acceptable
     bool acceptable = false;
     switch(mode)
     {
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index 6bdac2ad70..42bfcfd0b2 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -272,7 +272,7 @@ int main(int argc, char *argv[])
 // TODO: implement URI support on the Mac.
 #if !defined(MAC_OSX)
 
-                // Place this here as guiref has to be defined if we dont want to lose URIs
+                // Place this here as guiref has to be defined if we don't want to lose URIs
                 ipcInit();
 
                 // Check for URI in argv
@@ -299,7 +299,7 @@ int main(int argc, char *argv[])
                 window.setWalletModel(0);
                 guiref = 0;
             }
-            // Shutdown the core and it's threads, but don't exit Bitcoin-Qt here
+            // Shutdown the core and its threads, but don't exit Bitcoin-Qt here
             Shutdown(NULL);
         }
         else
diff --git a/src/qt/bitcoinaddressvalidator.cpp b/src/qt/bitcoinaddressvalidator.cpp
index d2b93e70f5..5136ea0c40 100644
--- a/src/qt/bitcoinaddressvalidator.cpp
+++ b/src/qt/bitcoinaddressvalidator.cpp
@@ -5,8 +5,8 @@
 
   This is:
   - All numbers except for '0'
-  - All uppercase letters except for 'I' and 'O'
-  - All lowercase letters except for 'l'
+  - All upper-case letters except for 'I' and 'O'
+  - All lower-case letters except for 'l'
 
   User friendly Base58 input can map
   - 'l' and 'I' to '1'
diff --git a/src/qt/bitcoinamountfield.h b/src/qt/bitcoinamountfield.h
index ead8bdb84b..ca4a888e4e 100644
--- a/src/qt/bitcoinamountfield.h
+++ b/src/qt/bitcoinamountfield.h
@@ -40,7 +40,7 @@ signals:
     void textChanged();
 
 protected:
-    /** Intercept focus-in event and ',' keypresses */
+    /** Intercept focus-in event and ',' key presses */
     bool eventFilter(QObject *object, QEvent *event);
 
 private:
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index afb829e08a..7e6ad15d6a 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -158,7 +158,7 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), this, SLOT(gotoHistoryPage()));
     connect(overviewPage, SIGNAL(transactionClicked(QModelIndex)), transactionView, SLOT(focusTransaction(QModelIndex)));
 
-    // Doubleclicking on a transaction on the transaction history page shows details
+    // Double-clicking on a transaction on the transaction history page shows details
     connect(transactionView, SIGNAL(doubleClicked(QModelIndex)), transactionView, SLOT(showDetails()));
 
     rpcConsole = new RPCConsole(this);
@@ -400,7 +400,7 @@ void BitcoinGUI::setWalletModel(WalletModel *walletModel)
         setEncryptionStatus(walletModel->getEncryptionStatus());
         connect(walletModel, SIGNAL(encryptionStatusChanged(int)), this, SLOT(setEncryptionStatus(int)));
 
-        // Balloon popup for new transaction
+        // Balloon pop-up for new transaction
         connect(walletModel->getTransactionTableModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
                 this, SLOT(incomingTransaction(QModelIndex,int,int)));
 
@@ -492,7 +492,7 @@ void BitcoinGUI::setNumConnections(int count)
 
 void BitcoinGUI::setNumBlocks(int count, int nTotalBlocks)
 {
-    // don't show / hide progressBar and it's label if we have no connection(s) to the network
+    // don't show / hide progressBar and its label if we have no connection(s) to the network
     if (!clientModel || clientModel->getNumConnections() == 0)
     {
         progressBarLabel->setVisible(false);
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
index adc75b0481..acf84eb941 100644
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -101,7 +101,7 @@ private:
 
     /** Create the main UI actions. */
     void createActions();
-    /** Create the menu bar and submenus. */
+    /** Create the menu bar and sub-menus. */
     void createMenuBar();
     /** Create the toolbars */
     void createToolBars();
@@ -168,7 +168,7 @@ private slots:
     void backupWallet();
     /** Change encrypted wallet passphrase */
     void changePassphrase();
-    /** Ask for pass phrase to unlock wallet temporarily */
+    /** Ask for passphrase to unlock wallet temporarily */
     void unlockWallet();
 
     /** Show window if hidden, unminimize when minimized, rise when obscured or show if hidden and fToggleHidden is true */
diff --git a/src/qt/bitcoinunits.cpp b/src/qt/bitcoinunits.cpp
index 9a9a4890dc..d4715abaec 100644
--- a/src/qt/bitcoinunits.cpp
+++ b/src/qt/bitcoinunits.cpp
@@ -99,7 +99,7 @@ QString BitcoinUnits::format(int unit, qint64 n, bool fPlus)
     QString quotient_str = QString::number(quotient);
     QString remainder_str = QString::number(remainder).rightJustified(num_decimals, '0');
 
-    // Right-trim excess 0's after the decimal point
+    // Right-trim excess zeros after the decimal point
     int nTrim = 0;
     for (int i = remainder_str.size()-1; i>=2 && (remainder_str.at(i) == '0'); --i)
         ++nTrim;
diff --git a/src/qt/bitcoinunits.h b/src/qt/bitcoinunits.h
index 18fa36a0b7..9b7c9e160e 100644
--- a/src/qt/bitcoinunits.h
+++ b/src/qt/bitcoinunits.h
@@ -5,7 +5,7 @@
 #include <QAbstractListModel>
 
 /** Bitcoin unit definitions. Encapsulates parsing and formatting
-   and serves as list model for dropdown selection boxes.
+   and serves as list model for drop-down selection boxes.
 */
 class BitcoinUnits: public QAbstractListModel
 {
@@ -26,7 +26,7 @@ public:
     //! Unit conversion and formatting
     ///@{
 
-    //! Get list of units, for dropdown box
+    //! Get list of units, for drop-down box
     static QList<Unit> availableUnits();
     //! Is unit ID valid?
     static bool valid(int unit);
@@ -49,7 +49,7 @@ public:
     ///@}
 
     //! @name AbstractListModel implementation
-    //! List model for unit dropdown selection box.
+    //! List model for unit drop-down selection box.
     ///@{
     enum RoleIndex {
         /** Unit identifier */
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index e6af9c3608..d3afc0a565 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -131,7 +131,7 @@ bool parseBitcoinURI(QString uri, SendCoinsRecipient *out)
     // Convert bitcoin:// to bitcoin:
     //
     //    Cannot handle this later, because bitcoin:// will cause Qt to see the part after // as host,
-    //    which will lowercase it (and thus invalidate the address).
+    //    which will lower-case it (and thus invalidate the address).
     if(uri.startsWith("bitcoin://"))
     {
         uri.replace(0, 10, "bitcoin:");
@@ -436,7 +436,7 @@ HelpMessageBox::HelpMessageBox(QWidget *parent) :
 
     setWindowTitle(tr("Bitcoin-Qt"));
     setTextFormat(Qt::PlainText);
-    // setMinimumWidth is ignored for QMessageBox so put in nonbreaking spaces to make it wider.
+    // setMinimumWidth is ignored for QMessageBox so put in non-breaking spaces to make it wider.
     setText(header + QString(QChar(0x2003)).repeated(50));
     setDetailedText(coreOptions + "\n" + uiOptions);
 }
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index a6d11081d6..db100bdb73 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -47,7 +47,7 @@ namespace GUIUtil
      */
     void copyEntryData(QAbstractItemView *view, int column, int role=Qt::EditRole);
 
-    /** Get save file name, mimics QFileDialog::getSaveFileName, except that it appends a default suffix
+    /** Get save filename, mimics QFileDialog::getSaveFileName, except that it appends a default suffix
         when no suffix is provided by the user.
 
       @param[in] parent  Parent window (or 0)
diff --git a/src/qt/notificator.cpp b/src/qt/notificator.cpp
index e668079536..c1c177dbfe 100644
--- a/src/qt/notificator.cpp
+++ b/src/qt/notificator.cpp
@@ -82,7 +82,7 @@ public:
 
     static int metaType();
 
-    // Image to variant that can be marshaled over DBus
+    // Image to variant that can be marshalled over DBus
     static QVariant toVariant(const QImage &img);
 
 private:
@@ -294,7 +294,7 @@ void Notificator::notify(Class cls, const QString &title, const QString &text, c
     default:
         if(cls == Critical)
         {
-            // Fall back to old fashioned popup dialog if critical and no other notification available
+            // Fall back to old fashioned pop-up dialog if critical and no other notification available
             QMessageBox::critical(parent, title, text, QMessageBox::Ok, QMessageBox::Ok);
         }
         break;
diff --git a/src/qt/notificator.h b/src/qt/notificator.h
index 0271c26f48..8abc0b2ec2 100644
--- a/src/qt/notificator.h
+++ b/src/qt/notificator.h
@@ -27,7 +27,7 @@ public:
     {
         Information,         /**< Informational message */
         Warning,             /**< Notify user of potential problem */
-        Critical             /**< An error occured */
+        Critical             /**< An error occurred */
     };
 
 public slots:
diff --git a/src/qt/signverifymessagedialog.cpp b/src/qt/signverifymessagedialog.cpp
index f8edbf80ea..b3fc69ef0f 100644
--- a/src/qt/signverifymessagedialog.cpp
+++ b/src/qt/signverifymessagedialog.cpp
@@ -126,7 +126,7 @@ void SignVerifyMessageDialog::on_signMessageButton_SM_clicked()
     if (!ctx.isValid())
     {
         ui->statusLabel_SM->setStyleSheet("QLabel { color: red; }");
-        ui->statusLabel_SM->setText(tr("Wallet unlock was canceled."));
+        ui->statusLabel_SM->setText(tr("Wallet unlock was cancelled."));
         return;
     }
 
diff --git a/src/qt/transactionfilterproxy.h b/src/qt/transactionfilterproxy.h
index 8d6829d6f0..30b98588f0 100644
--- a/src/qt/transactionfilterproxy.h
+++ b/src/qt/transactionfilterproxy.h
@@ -23,7 +23,7 @@ public:
     void setDateRange(const QDateTime &from, const QDateTime &to);
     void setAddressPrefix(const QString &addrPrefix);
     /**
-      @note Type filter takes a bitfield created with TYPE() or ALL_TYPES
+      @note Type filter takes a bit field created with TYPE() or ALL_TYPES
      */
     void setTypeFilter(quint32 modes);
     void setMinAmount(qint64 minimum);
diff --git a/src/qt/transactionview.cpp b/src/qt/transactionview.cpp
index 1370a30ce4..ed2a70a350 100644
--- a/src/qt/transactionview.cpp
+++ b/src/qt/transactionview.cpp
@@ -205,7 +205,7 @@ void TransactionView::chooseDate(int idx)
                 TransactionFilterProxy::MAX_DATE);
         break;
     case ThisWeek: {
-        // Find last monday
+        // Find last Monday
         QDate startOfWeek = current.addDays(-(current.dayOfWeek()-1));
         transactionProxyModel->setDateRange(
                 QDateTime(startOfWeek),
diff --git a/src/script.cpp b/src/script.cpp
index c29648c2bc..8c35f0eed5 100644
--- a/src/script.cpp
+++ b/src/script.cpp
@@ -1070,7 +1070,7 @@ uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int
     }
     else if ((nHashType & 0x1f) == SIGHASH_SINGLE)
     {
-        // Only lockin the txout payee at same index as txin
+        // Only lock-in the txout payee at same index as txin
         unsigned int nOut = nIn;
         if (nOut >= txTmp.vout.size())
         {
@@ -1272,7 +1272,7 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsi
                 if (!script2.GetOp(pc2, opcode2, vch2))
                     break;
                 // Normal situation is to fall through
-                // to other if/else statments
+                // to other if/else statements
             }
 
             if (opcode2 == OP_PUBKEY)
@@ -1345,7 +1345,7 @@ bool SignN(const vector<valtype>& multisigdata, const CKeyStore& keystore, uint2
 // Sign scriptPubKey with private keys stored in keystore, given transaction hash and hash type.
 // Signatures are returned in scriptSigRet (or returns false if scriptPubKey can't be signed),
 // unless whichTypeRet is TX_SCRIPTHASH, in which case scriptSigRet is the redemption script.
-// Returns false if scriptPubKey could not be completely satisified.
+// Returns false if scriptPubKey could not be completely satisfied.
 //
 bool Solver(const CKeyStore& keystore, const CScript& scriptPubKey, uint256 hash, int nHashType,
                   CScript& scriptSigRet, txnouttype& whichTypeRet)
@@ -1733,7 +1733,7 @@ static CScript CombineSignatures(CScript scriptPubKey, const CTransaction& txTo,
             return PushAll(sigs1);
         else
         {
-            // Recurse to combine:
+            // Recur to combine:
             valtype spk = sigs1.back();
             CScript pubKey2(spk.begin(), spk.end());
 
@@ -1811,7 +1811,7 @@ unsigned int CScript::GetSigOpCount(const CScript& scriptSig) const
             return 0;
     }
 
-    /// ... and return it's opcount:
+    /// ... and return its opcount:
     CScript subscript(data.begin(), data.end());
     return subscript.GetSigOpCount(true);
 }
diff --git a/src/test/DoS_tests.cpp b/src/test/DoS_tests.cpp
index 4a185b3cc5..7f08dd5543 100644
--- a/src/test/DoS_tests.cpp
+++ b/src/test/DoS_tests.cpp
@@ -37,7 +37,7 @@ BOOST_AUTO_TEST_CASE(DoS_banning)
     CNode dummyNode1(INVALID_SOCKET, addr1, "", true);
     dummyNode1.Misbehaving(100); // Should get banned
     BOOST_CHECK(CNode::IsBanned(addr1));
-    BOOST_CHECK(!CNode::IsBanned(ip(0xa0b0c001|0x0000ff00))); // Different ip, not banned
+    BOOST_CHECK(!CNode::IsBanned(ip(0xa0b0c001|0x0000ff00))); // Different IP, not banned
 
     CAddress addr2(ip(0xa0b0c002));
     CNode dummyNode2(INVALID_SOCKET, addr2, "", true);
diff --git a/src/test/script_P2SH_tests.cpp b/src/test/script_P2SH_tests.cpp
index f7bf5dfbf1..eabfcd0304 100644
--- a/src/test/script_P2SH_tests.cpp
+++ b/src/test/script_P2SH_tests.cpp
@@ -130,7 +130,7 @@ BOOST_AUTO_TEST_CASE(norecurse)
     // Should not verify, because it will try to execute OP_INVALIDOPCODE
     BOOST_CHECK(!Verify(scriptSig, p2sh, true));
 
-    // Try to recurse, and verification should succeed because
+    // Try to recur, and verification should succeed because
     // the inner HASH160 <> EQUAL should only check the hash:
     CScript p2sh2;
     p2sh2.SetDestination(p2sh.GetID());
@@ -225,7 +225,7 @@ BOOST_AUTO_TEST_CASE(is)
 
 BOOST_AUTO_TEST_CASE(switchover)
 {
-    // Test switchover code
+    // Test switch over code
     CScript notValid;
     notValid << OP_11 << OP_12 << OP_EQUALVERIFY;
     CScript scriptSig;
diff --git a/src/test/wallet_tests.cpp b/src/test/wallet_tests.cpp
index 2f6da932a6..b0b3c47967 100644
--- a/src/test/wallet_tests.cpp
+++ b/src/test/wallet_tests.cpp
@@ -164,11 +164,11 @@ BOOST_AUTO_TEST_CASE(coin_selection_tests)
         add_coin( 3*COIN);
         add_coin( 4*COIN); // now we have 5+6+7+8+18+20+30+100+200+300+400 = 1094 cents
         BOOST_CHECK( wallet.SelectCoinsMinConf(95 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet));
-        BOOST_CHECK_EQUAL(nValueRet, 1 * COIN);  // we should get 1 bitcoin in 1 coin
+        BOOST_CHECK_EQUAL(nValueRet, 1 * COIN);  // we should get 1 BTC in 1 coin
         BOOST_CHECK_EQUAL(setCoinsRet.size(), 1);
 
         BOOST_CHECK( wallet.SelectCoinsMinConf(195 * CENT, 1, 1, vCoins, setCoinsRet, nValueRet));
-        BOOST_CHECK_EQUAL(nValueRet, 2 * COIN);  // we should get 2 bitcoins in 1 coin
+        BOOST_CHECK_EQUAL(nValueRet, 2 * COIN);  // we should get 2 BTC in 1 coin
         BOOST_CHECK_EQUAL(setCoinsRet.size(), 1);
 
         // empty the wallet and start again, now with fractions of a cent, to test sub-cent change avoidance
diff --git a/src/util.cpp b/src/util.cpp
index 6014081c62..c9654989af 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -348,7 +348,7 @@ string FormatMoney(int64 n, bool fPlus)
     int64 remainder = n_abs%COIN;
     string str = strprintf("%"PRI64d".%08"PRI64d, quotient, remainder);
 
-    // Right-trim excess 0's before the decimal point:
+    // Right-trim excess zeros before the decimal point:
     int nTrim = 0;
     for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
         ++nTrim;
diff --git a/src/util.h b/src/util.h
index 4423d2ff58..8244dcbaf1 100644
--- a/src/util.h
+++ b/src/util.h
@@ -12,7 +12,7 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 #else
-typedef int pid_t; /* define for windows compatiblity */
+typedef int pid_t; /* define for windows compatibility */
 #endif
 #include <map>
 #include <vector>
diff --git a/src/version.h b/src/version.h
index c0d53e8b91..ca60e02bd0 100644
--- a/src/version.h
+++ b/src/version.h
@@ -10,7 +10,7 @@
 // client versioning
 //
 
-// These need to be macro's, as version.cpp's voodoo requires it
+// These need to be macros, as version.cpp's voodoo requires it
 #define CLIENT_VERSION_MAJOR       0
 #define CLIENT_VERSION_MINOR       6
 #define CLIENT_VERSION_REVISION   99
diff --git a/src/wallet.cpp b/src/wallet.cpp
index fee4db9e71..8ad0f84aca 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -758,7 +758,7 @@ void CWallet::ReacceptWalletTransactions()
             }
             else
             {
-                // Reaccept any txes of ours that aren't already in a block
+                // Re-accept any txes of ours that aren't already in a block
                 if (!wtx.IsCoinBase())
                     wtx.AcceptWalletTransaction(txdb, false);
             }
@@ -767,7 +767,7 @@ void CWallet::ReacceptWalletTransactions()
         {
             // TODO: optimize this to scan just part of the block chain?
             if (ScanForWalletTransactions(pindexGenesisBlock))
-                fRepeat = true;  // Found missing transactions: re-do Reaccept.
+                fRepeat = true;  // Found missing transactions: re-do re-accept.
         }
     }
 }