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-rw-r--r--doc/filters.texi12
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diff --git a/doc/filters.texi b/doc/filters.texi
index bc5c217ee9..6d6a52e4ef 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10943,6 +10943,18 @@ Can be either @var{normal} or @var{diff}. Default is @var{normal}.
between neighbour histogram values.
@end table
+@section epx
+Apply the EPX magnification filter which is designed for pixel art.
+
+It accepts the following option:
+
+@table @option
+@item n
+Set the scaling dimension: @code{2} for @code{2xEPX}, @code{3} for
+@code{3xEPX}.
+Default is @code{3}.
+@end table
+
@section eq
Set brightness, contrast, saturation and approximate gamma adjustment.