Improve documentation of `FT_LOAD_NO_RECURSE'.
diff --git a/include/freetype/freetype.h b/include/freetype/freetype.h
index 25db584..dc637f8 100644
--- a/include/freetype/freetype.h
+++ b/include/freetype/freetype.h
@@ -2929,10 +2929,13 @@
*
* FT_LOAD_NO_RECURSE ::
* Don't load composite glyphs recursively. Instead, the font driver
- * should set the `num_subglyph` and `subglyphs` values of the glyph
- * slot accordingly, and set `glyph->format` to
- * @FT_GLYPH_FORMAT_COMPOSITE. The description of subglyphs can then
- * be accessed with @FT_Get_SubGlyph_Info.
+ * fills the `num_subglyph` and `subglyphs` values of the glyph slot;
+ * it also sets `glyph->format` to @FT_GLYPH_FORMAT_COMPOSITE. The
+ * description of subglyphs can then be accessed with
+ * @FT_Get_SubGlyph_Info.
+ *
+ * Don't use this flag for retrieving metrics information since some
+ * font drivers only return rudimentary data.
*
* This flag implies @FT_LOAD_NO_SCALE and @FT_LOAD_IGNORE_TRANSFORM.
*
