diff --git a/doc/apple2.sgml b/doc/apple2.sgml
index 28120577a..2cc62d7ae 100644
--- a/doc/apple2.sgml
+++ b/doc/apple2.sgml
@@ -310,9 +310,9 @@ the memory from $800 to $1FFF can be added to the heap by calling
 
 ProDOS 8 requires for every open file a page-aligned 1 KB I/O buffer. By default
 these buffers are allocated by the cc65 runtime system on the heap using
-<tt/posix_memalign()/. While this is generally the best solution it means quite
-some overhead for (especially rather small) cc65 programs which do open files
-but don't make use of the heap otherwise.
+<url url="funcref.html#posix_memalign" name="posix_memalign()">. While this is
+generally the best solution it means quite some overhead for (especially rather
+small) cc65 programs which do open files but don't make use of the heap otherwise.
 
 The apple2 package comes with the alternative ProDOS 8 I/O buffer allocation
 module <tt/apple2-iobuf-0800.o/ which uses the memory between &dollar;800 and
diff --git a/doc/apple2enh.sgml b/doc/apple2enh.sgml
index fce6127bd..987b63fd0 100644
--- a/doc/apple2enh.sgml
+++ b/doc/apple2enh.sgml
@@ -290,9 +290,9 @@ the memory from &dollar;800 to &dollar;1FFF can be added to the heap by calling
 
 ProDOS 8 requires for every open file a page-aligned 1 KB I/O buffer. By default
 these buffers are allocated by the cc65 runtime system on the heap using
-<tt/posix_memalign()/. While this is generally the best solution it means quite
-some overhead for (especially rather small) cc65 programs which do open files
-but don't make use of the heap otherwise.
+<url url="funcref.html#posix_memalign" name="posix_memalign()">. While this is
+generally the best solution it means quite some overhead for (especially rather
+small) cc65 programs which do open files but don't make use of the heap otherwise.
 
 The apple2enh package comes with the alternative ProDOS 8 I/O buffer allocation
 module <tt/apple2enh-iobuf-0800.o/ which uses the memory between &dollar;800 and
diff --git a/doc/atari.sgml b/doc/atari.sgml
index 3057cd8a6..060bc8ad4 100644
--- a/doc/atari.sgml
+++ b/doc/atari.sgml
@@ -412,8 +412,9 @@ Please mind that ANTIC has memory alignment requirements for "player
 missile graphics"-data, font data, display lists and screen memory. Creation
 of a special linker configuration with appropriate aligned segments and
 switching to that segment in the c-code is usually necessary. A more memory
-hungry solution consists in using the "<tt/posix_memalign()/" function in
-conjunction with copying your data to the allocated memory.
+hungry solution consists in using the <url url="funcref.html#posix_memalign"
+name="posix_memalign()"> function in conjunction with copying your data to the
+allocated memory.
 
 <sect1>Character mapping<p>
 
diff --git a/doc/chrcvt65.sgml b/doc/chrcvt65.sgml
index a631a0004..00909e12f 100644
--- a/doc/chrcvt65.sgml
+++ b/doc/chrcvt65.sgml
@@ -19,7 +19,7 @@ the native format.
 
 chrcvt65 is a vector font converter. It is able to convert a "BGI Stroked
 Font" to a compact TGI native vector font. See the function <url
-url="funcref.html#tgi_load_vectorfont" name="tgi_load_vectorfont"> for usage.
+url="tgi.html#tgi_load_vectorfont" name="tgi_load_vectorfont"> for usage.
 
 
 
diff --git a/doc/funcref.sgml b/doc/funcref.sgml
index 7c3b92230..5c603b130 100644
--- a/doc/funcref.sgml
+++ b/doc/funcref.sgml
@@ -738,7 +738,7 @@ communication, see also <tt>testcode/lib/ser-test.c</tt>.
 <item><ref id="ltoa" name="ltoa">
 <item><ref id="malloc" name="malloc">
 <item><ref id="perror" name="perror">
-<!-- <item><ref id="posix_memalign" name="posix_memalign"> -->
+<item><ref id="posix_memalign" name="posix_memalign">
 <!-- <item><ref id="putenv" name="putenv"> -->
 <item><ref id="qsort" name="qsort">
 <item><ref id="rand" name="rand">
@@ -6223,6 +6223,32 @@ be used in presence of a prototype.
 </quote>
 
 
+<sect1>posix_memalign<label id="posix_memalign"><p>
+
+<quote>
+<descrip>
+<tag/Function/Allocate aligned dynamic memory.
+<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
+<tag/Declaration/<tt/int __fastcall__ posix_memalign (void** memptr, size_t alignment, size_t size);/
+<tag/Description/Allocate a block of memory with the given "size", which is aligned to a
+memory address that is a multiple of "alignment".  "alignment" <em/must not/ be
+zero, and <em/must/ be a power of two; otherwise, this function will return
+EINVAL.  The function returns ENOMEM if not enough memory is available
+to satisfy the request.  "memptr" must point to a variable; that variable
+will return the address of the allocated memory.  Use free() to release that
+allocated block.
+<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/POSIX 1003.1
+<tag/See also/
+<ref id="free" name="free">
+<tag/Example/None.
+</descrip>
+</quote>
+
+
 <sect1>psg_delay<label id="psg_delay"><p>
 
 <quote>