[taler-docs] branch master updated: note for Wire Gateway API

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The following commit(s) were added to refs/heads/master by this push:
     new 816dee4  note for Wire Gateway API
816dee4 is described below

commit 816dee4cfb58658ac2c4dc1b8c19e1d61e359385
Author: MS <ms@taler.net>
AuthorDate: Tue Jan 5 19:11:19 2021 +0100

    note for Wire Gateway API
---
 taler-exchange-manual.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/taler-exchange-manual.rst b/taler-exchange-manual.rst
index 1d30852..5c314ae 100644
--- a/taler-exchange-manual.rst
+++ b/taler-exchange-manual.rst
@@ -81,6 +81,13 @@ currencies such as USD or EUR. Similarly, the Taler exchange 
must
 interact with a bank. The bank of the exchange holds the exchange’s
 funds in an escrow account.
 
+Note that, given the technical burden (XML-based communications,
+additional cryptography, and a vast variety of standards) due to
+interact with banks, the exchange uses a intermediary system to talk
+to its bank.  Such intermediary system abstracts the native banking
+protocol by exposing the *Wire Gateway API*; this way, the exchange
+can conduct its banking operations in a simplified and JSON-based style.
+
 When customers wire money to the escrow account, the bank notifies the
 exchange about the incoming wire transfers. The exchange then creates a
 *reserve* based on the subject of the wire transfer. The wallet which

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