diff --git a/doc/apple2.sgml b/doc/apple2.sgml
index eef0eed3d..405f2ccbd 100644
--- a/doc/apple2.sgml
+++ b/doc/apple2.sgml
@@ -455,7 +455,7 @@ BASIC.SYSTEM) there are some limitations for DOS 3.3:
 
 <descrip>
 
-  <tag>Disk File I/O</tag>
+  <tag>Disk file I/O</tag>
   There's no disk file I/O support. Any attempt to use it yields an error with
   <tt/errno/ set to <tt/ENOSYS/. This implicitly means that loadable drivers
   are in general not functional as they depend on disk file I/O. Therefore the statically
@@ -480,6 +480,18 @@ BASIC.SYSTEM) there are some limitations for DOS 3.3:
 </descrip><p>
 
 
+<sect1>Random number generator<p>
+
+<descrip>
+
+  <tag/Random number seed/
+  The random number seed is generated from the time the program waits for user input.
+  Therefore it is necessary to wait for at least one user keypress either via Standard
+  I/O or via Direct console I/O before initializing the pseudo random number generator.
+
+</descrip><p>
+
+
 
 <sect>Other hints<p>
 
diff --git a/doc/apple2enh.sgml b/doc/apple2enh.sgml
index b40523aba..501abde61 100644
--- a/doc/apple2enh.sgml
+++ b/doc/apple2enh.sgml
@@ -456,7 +456,7 @@ BASIC.SYSTEM) there are some limitations for DOS 3.3:
 
 <descrip>
 
-  <tag>Disk File I/O</tag>
+  <tag>Disk file I/O</tag>
   There's no disk file I/O support. Any attempt to use it yields an error with
   <tt/errno/ set to <tt/ENOSYS/. This implicitly means that loadable drivers
   are in general not functional as they depend on disk file I/O. Therefore the statically
@@ -481,6 +481,18 @@ BASIC.SYSTEM) there are some limitations for DOS 3.3:
 </descrip><p>
 
 
+<sect1>Random number generator<p>
+
+<descrip>
+
+  <tag/Random number seed/
+  The random number seed is generated from the time the program waits for user input.
+  Therefore it is necessary to wait for at least one user keypress either via Standard
+  I/O or via Direct console I/O before initializing the pseudo random number generator.
+
+</descrip><p>
+
+
 
 <sect>Other hints<p>