[taler-docs] branch master updated: more problems

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dold pushed a commit to branch master
in repository docs.

The following commit(s) were added to refs/heads/master by this push:
     new 069bf92  more problems
069bf92 is described below

commit 069bf92a566cc83054f553be68a3f3fdc9f2a430
Author: Florian Dold <florian.dold@gmail.com>
AuthorDate: Sun Aug 9 00:33:24 2020 +0530

    more problems
---
 design-documents/007-payment.rst | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/design-documents/007-payment.rst b/design-documents/007-payment.rst
index 4a0998b..c797cd5 100644
--- a/design-documents/007-payment.rst
+++ b/design-documents/007-payment.rst
@@ -50,6 +50,10 @@ When *resource-URL* is requested, the storefront runs the 
following steps:
    and return to the client the content for *resource name*.  **Terminate.**
 9. Otherwise, the *order-status* is unpaid.  Redirect the client to 
*client-order-status-URL*. **Terminate.**
 
+.. note::
+
+   When a refund is given, the corresponding tuple must be removed from the 
*session-page-cache*.
+
 Backend Private Order Status
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -140,8 +144,8 @@ Covered Scenarios
 Problematic Scenarios
 ---------------------
 
-Bookmarks of Lost Purchases
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Bookmarks of Lost Purchases / Social Sharing of Fulfillment URLs
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Let's say I bought some article a few months ago and I lost my wallet. I still 
have the augmented fulfillment URL
 for the article bookmarked.  When I re-visit the URL, I will be prompted via 
QR code, but I can *never* prove
@@ -153,6 +157,8 @@ It's not clear if this is a common/important scenario 
though.
 But we might want to make clear on the client order status page that it's 
showing a QR code for something
 that was already paid.
 
+The same concern applies when sending the fulfillment URL of a paid paywalled 
Web resource to somebody else.
+
 The Back Button
 ^^^^^^^^^^^^^^^
 

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