# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1670714834 0
# Node ID 598ee3ce238bbfd7e3a686ac09ade90ea16424d6
# Parent  92fdb499b5c3eaed76987a720437a7e402da5a02
doc/Binary-file-format: document .gsmx suffix

diff -r 92fdb499b5c3 -r 598ee3ce238b doc/Binary-file-format
--- a/doc/Binary-file-format	Sat Dec 10 22:01:14 2022 +0000
+++ b/doc/Binary-file-format	Sat Dec 10 23:27:14 2022 +0000
@@ -19,3 +19,8 @@
 our low-level binary file reading function will grok such mixing just fine, but
 each higher-level test program is expected to be written for only one codec,
 either FR or EFR.
+
+The recommended filename suffix for extended-libgsm binary files in the present
+format is .gsmx; of course dot-separated filename suffixes hold absolutely no
+special meaning on Unix systems, but many developers still strongly prefer to
+have them for psychological comfort.