diff --git a/omegat/project_save.tmx b/omegat/project_save.tmx
index 4af12c4..3fab2e7 100644
--- a/omegat/project_save.tmx
+++ b/omegat/project_save.tmx
@@ -27416,6 +27416,14 @@ leurs arguments différemment des fonctions (les arguments ne sont pas
mode « Diff »
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+ Diff mode highlights each hunk header, to distinguish it from the actual contents of the hunk.
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+ Le mode « Diff » met en surbrillance chaque en-tête de hunk, pour le distinguer du contenu actuel du hunk.
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Diff mode is a major mode used for the output of @kbd{M-x diff} and other similar commands.