7 files changed, 40 insertions, 7 deletions
diff --git a/articles/ui/figs/contract.pdf b/articles/ui/figs/contract.pdf
new file mode 100644
index 000000000..e83162109
--- /dev/null
+++ b/articles/ui/figs/contract.pdf
diff --git a/articles/ui/figs/contract.pml b/articles/ui/figs/contract.pml
new file mode 100644
index 000000000..74bf23dd6
--- /dev/null
+++ b/articles/ui/figs/contract.pml
@@ -0,0 +1,31 @@
+
+@startuml
+
+hide footbox
+
+box "User"
+  Participant "Wallet" as W
+  Participant "Browser" as U
+end box
+
+box "Merchant"
+  Participant "Storefront" as S
+  Participant "Backend" as B
+end box
+
+autonumber
+
+S -> B : proposed contract 
+B -> S : signed contract 
+
+S -> U : custom (HTTP(S))
+
+U -> W : signed contract
+W -> U : signed coins
+
+U -> S : custom (HTTP(S))
+
+S -> B : signed coins (HTTP(S))
+B -> S : confirmation (HTTP(S))
+
+@enduml
diff --git a/articles/ui/figs/taler-pay.pdf b/articles/ui/figs/taler-pay.pdf
index 590fff216..818ddc66a 100644
--- a/articles/ui/figs/taler-pay.pdf
+++ b/articles/ui/figs/taler-pay.pdf
diff --git a/articles/pml/taler-pay.pml b/articles/ui/figs/taler-pay.pml
index 9efd779ae..56d5c0c3c 100644
--- a/articles/pml/taler-pay.pml
+++ b/articles/ui/figs/taler-pay.pml
@@ -1,5 +1,4 @@
 @startuml
-!includeurl https://raw.githubusercontent.com/w3c/webpayments/gh-pages/PaymentFlows/skin.ipml
 
 Actor "Payer (Shopper) Browser" as Payer
 Participant "Payee (Merchant) Site" as Payee
@@ -10,7 +9,7 @@ note over Payee, Exchange: HTTP/HTTPS
 
 title Taler (Payment)
 
-== Establish Payment Obligation ==
+== Establish Contract ==
 
 opt
 Payer->Payer: Select Taler payment method (skippable with auto-detection)
@@ -39,7 +38,7 @@ Payee->Payer: Confirm payment
 opt
 Payer->Payee: Request fulfillment (if Web article)
 
-Payee->Payer: Provide media product
+Payee->Payer: Provide product resource
 end
 
 @enduml
diff --git a/articles/ui/figs/taler-withdraw.pdf b/articles/ui/figs/taler-withdraw.pdf
index 1bf3ee484..8706b447c 100644
--- a/articles/ui/figs/taler-withdraw.pdf
+++ b/articles/ui/figs/taler-withdraw.pdf
diff --git a/articles/pml/taler-withdraw.pml b/articles/ui/figs/taler-withdraw.pml
index fa0640660..6860bb940 100644
--- a/articles/pml/taler-withdraw.pml
+++ b/articles/ui/figs/taler-withdraw.pml
@@ -1,5 +1,4 @@
 @startuml
-!includeurl https://raw.githubusercontent.com/w3c/webpayments/gh-pages/PaymentFlows/skin.ipml
 
 Actor "Customer Browser" as Customer
 Participant "Bank Site" as Bank
@@ -7,7 +6,7 @@ Participant "Taler Exchange" as Exchange
 
 note over Customer, Bank: HTTPS
 note over Customer, Exchange: HTTPS
-note over Bank, Exchange: SEPA
+note over Bank, Exchange: wire transfer
 
 title Taler (Withdraw coins)
 
@@ -16,8 +15,8 @@ Bank->Customer: send account portal
 
 Customer->Customer: initiate withdrawal (specify amount and exchange)
 
-Customer->Exchange: request key material and wire transfer data
-Exchange->Customer: send key material and wire transfer data
+Customer->Exchange: request coin denomination keys and wire transfer data
+Exchange->Customer: send coin denomination keys and wire transfer data
 
 Customer->Bank: execute withdrawal
 
@@ -30,4 +29,8 @@ Bank->Customer: withdrawal confirmation
 Bank->Exchange: execute wire transfer
 
 
+Customer->Exchange: withdraw request
+Customer->Exchange: signed blinded coins
+Customer->Customer: unblind coins
+
 @enduml
diff --git a/articles/ui/figs/taler-withdraw.png b/articles/ui/figs/taler-withdraw.png
new file mode 100644
index 000000000..6e3f0f4a0
--- /dev/null
+++ b/articles/ui/figs/taler-withdraw.png