3166.
@@
+@RET@ FcBool
+@FUNC@ FcLangSetDel
+@TYPE1@ FcLangSet * @ARG1@ ls
+@TYPE2@ const FcChar8 * @ARG2@ lang
+@PURPOSE@ remove a language from a langset
+@DESC@
+<parameter>lang</parameter> is removed from <parameter>ls</parameter>.
+<parameter>lang</parameter> should be of the form Ll-Tt where Ll is a
+two or three letter language from ISO 639 and Tt is a territory from ISO
+3166.
+@@
+
+@RET@ FcLangSet *
+@FUNC@ FcLangSetUnion
+@TYPE1@ const FcLangSet * @ARG1@ ls_a
+@TYPE2@ const FcLangSet * @ARG2@ ls_b
+@PURPOSE@ Add langsets
+@DESC@
+Returns a set including only those languages found in either <parameter>ls_a</parameter> or <parameter>ls_b</parameter>.
+@@
+
+@RET@ FcLangSet *
+@FUNC@ FcLangSetSubtract
+@TYPE1@ const FcLangSet * @ARG1@ ls_a
+@TYPE2@ const FcLangSet * @ARG2@ ls_b
+@PURPOSE@ Subtract langsets
+@DESC@
+Returns a set including only those languages found in <parameter>ls_a</parameter> but not <parameter>ls_b</parameter>.
+@@
+
@RET@ FcLangResult
@FUNC@ FcLangSetCompare
@TYPE1@ const FcLangSet * @ARG1@ ls_a
This element holds at least one <literal><int></literal> element of
an Unicode code point or more.
</para></refsect2>
+ <refsect2><title><literal><langset></literal></title><para>
+This element holds at least one <literal><string></literal> element of
+a RFC-3066-style languages or more.
+ </para></refsect2>
<refsect2><title><literal><name></literal></title><para>
Holds a property name. Evaluates to the first value from the property of
the font, not the pattern.