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@@ -422,7 +422,7 @@ exchange is going to use. So far, only ``db = postgres`` is supported. After
choosing the backend, it is mandatory to supply the connection string
(namely, the database name). This is possible in two ways:
-- via an environment variable: TALER_EXCHANGEDB_POSTGRES_CONFIG.
+- via an environment variable: ``TALER_EXCHANGEDB_POSTGRES_CONFIG``.
- via configuration option CONFIG, under section ``[exchangedb-BACKEND]``.
For example, the demo exchange is configured as follows: