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-rw-r--r--doc/filters.texi1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index 450f6ab1f2..02f0a29c64 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2355,6 +2355,7 @@ Available presets are:
@item linear_contrast
@item medium_contrast
@item negative
+@item strong_contrast
@item vintage
@end table
Default is unset.