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-rw-r--r--include/freetype/ftsynth.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/freetype/ftsynth.h b/include/freetype/ftsynth.h
index a1277cafc..5d1969765 100644
--- a/include/freetype/ftsynth.h
+++ b/include/freetype/ftsynth.h
@@ -73,7 +73,9 @@ FT_BEGIN_HEADER
FT_GlyphSlot_Oblique( FT_GlyphSlot slot );
/* Slant an outline glyph by a given sine of an angle. You can apply */
- /* slant along either x- or y-axis. */
+ /* slant along either x- or y-axis by choosing a corresponding non-zero */
+ /* argument. If both slants are non-zero, some affine transformation */
+ /* will result. */
FT_EXPORT( void )
FT_GlyphSlot_Slant( FT_GlyphSlot slot,
FT_Fixed xslant,