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-rw-r--r--include/freetype/freetype.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 39662784d..ba3950e63 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -958,6 +958,9 @@ FT_BEGIN_HEADER
* Note that the bounding box might be off by (at least) one pixel for
* hinted fonts. See @FT_Size_Metrics for further discussion.
*
+ * Note that the bounding box does not vary in OpenType variable fonts
+ * and should only be used in relation to the default instance.
+ *
* units_per_EM ::
* The number of font units per EM square for this face. This is
* typically 2048 for TrueType fonts, and 1000 for Type~1 fonts. Only