Fix some typos.
diff --git a/docs/usermanual-clusters.xml b/docs/usermanual-clusters.xml
index b8d9191..a7b1658 100644
--- a/docs/usermanual-clusters.xml
+++ b/docs/usermanual-clusters.xml
@@ -158,7 +158,7 @@
<para>
For left-to-right scripts (LTR) and top-to-bottom scripts (TTB),
HarfBuzz will preserve the monotonic property: client programs
- are guaranteed that monotonically increasing initial clulster
+ are guaranteed that monotonically increasing initial cluster
values will be returned as monotonically increasing final
cluster values.
</para>
@@ -167,7 +167,7 @@
the directionality of the buffer itself is reversed for final
output as a matter of design. Therefore, HarfBuzz inverts the
monotonic property: client programs are guaranteed that
- monotonically increasing initial clulster values will be
+ monotonically increasing initial cluster values will be
returned as monotonically <emphasis>decreasing</emphasis> final
cluster values.
</para>
diff --git a/docs/usermanual-fonts-and-faces.xml b/docs/usermanual-fonts-and-faces.xml
index c1787bd..b87f0e5 100644
--- a/docs/usermanual-fonts-and-faces.xml
+++ b/docs/usermanual-fonts-and-faces.xml
@@ -37,7 +37,7 @@
An <type>hb_face_t</type> represents a <emphasis>face</emphasis>
in HarfBuzz. This data type is a wrapper around an
<type>hb_blob_t</type> blob that holds the contents of a binary
- fotn file. Since HarfBuzz supports TrueType Collections and
+ font file. Since HarfBuzz supports TrueType Collections and
OpenType Collections (each of which can include multiple
typefaces), a HarfBuzz face also requires an index number
specifying which typeface in the file you want to use. Most of
diff --git a/src/hb-ot-math.h b/src/hb-ot-math.h
index d88aef8..8055195 100644
--- a/src/hb-ot-math.h
+++ b/src/hb-ot-math.h
@@ -158,7 +158,7 @@
* hb_ot_math_glyph_part_t:
* @glyph: The glyph index of the variant part
* @start_connector_length: The length of the connector on the starting side of the variant part
- * @end_connection_length: The length of the conector on the ending side of the variant part
+ * @end_connection_length: The length of the connector on the ending side of the variant part
* @full_advance: The total advance of the part
* @flags: #hb_ot_math_glyph_part_flags_t flags for the part
*