diff --git a/doc/funcref.sgml b/doc/funcref.sgml
index 81c63a38b..a0a6d7ca8 100644
--- a/doc/funcref.sgml
+++ b/doc/funcref.sgml
@@ -780,6 +780,7 @@ communication, see also <tt>testcode/lib/ser-test.c</tt>.
 <item><ref id="strqtok" name="strqtok">
 <item><ref id="strrchr" name="strrchr">
 <item><ref id="strspn" name="strspn">
+<item><ref id="strcasestr" name="strcasestr">
 <item><ref id="strstr" name="strstr">
 <item><ref id="strtok" name="strtok">
 <item><ref id="strxfrm" name="strxfrm">
@@ -7899,22 +7900,47 @@ be used in presence of a prototype.
 </quote>
 
 
-<sect1>strstr<label id="strstr"><p>
+<sect1>strcasestr<label id="strcasestr"><p>
 
 <quote>
 <descrip>
-<tag/Function/Find a substring.
+<tag/Function/Find a substring, case-insensitive.
 <tag/Header/<tt/<ref id="string.h" name="string.h">/
-<tag/Declaration/<tt/char* __fastcall__ strstr (const char* str, const char* substr);/
-<tag/Description/<tt/strstr/ searches for the first occurrence of the string
-<tt/substr/ within <tt/str/. If found, it returns a pointer to the copy,
-otherwise it returns <tt/NULL/.
+<tag/Declaration/<tt/char* __fastcall__ strcasestr (const char* str, const char* substr);/
+<tag/Description/<tt/strcasestr/ searches for the first occurrence of the string
+<tt/substr/ within <tt/str/. If found, it returns a pointer to the start of the
+match in <tt/str/, otherwise it returns <tt/NULL/.
 <tag/Notes/<itemize>
 <item>The function is only available as fastcall function, so it may only
 be used in presence of a prototype.
 </itemize>
 <tag/Availability/ISO 9899
 <tag/See also/
+<ref id="strstr" name="strstr">,
+<ref id="strcspn" name="strcspn">,
+<ref id="strspn" name="strspn">
+<tag/Example/None.
+</descrip>
+</quote>
+
+
+<sect1>strstr<label id="strstr"><p>
+
+<quote>
+<descrip>
+<tag/Function/Find a substring, case-sensitive.
+<tag/Header/<tt/<ref id="string.h" name="string.h">/
+<tag/Declaration/<tt/char* __fastcall__ strstr (const char* str, const char* substr);/
+<tag/Description/<tt/strstr/ searches for the first occurrence of the string
+<tt/substr/ within <tt/str/. If found, it returns a pointer to the start of the
+match in <tt/str/, otherwise it returns <tt/NULL/.
+<tag/Notes/<itemize>
+<item>The function is only available as fastcall function, so it may only
+be used in presence of a prototype.
+</itemize>
+<tag/Availability/ISO 9899
+<tag/See also/
+<ref id="strcasestr" name="strcasestr">,
 <ref id="strcspn" name="strcspn">,
 <ref id="strspn" name="strspn">
 <tag/Example/None.