diff --git a/lam/docs/devel/mod_accountPages.htm b/lam/docs/devel/mod_accountPages.htm
index 5017bce2..2c49d69b 100644
--- a/lam/docs/devel/mod_accountPages.htm
+++ b/lam/docs/devel/mod_accountPages.htm
@@ -198,6 +198,10 @@ This function is called <span style="font-weight: bold;">process_&lt;page
 name&gt;()</span> where <span style="font-style: italic;">&lt;page
 name&gt;</span> is the name of your subpage.<br>
 <br>
+If all input data is ok then return "0" or an array containing no error
+message. If you return one or more error messages then the user will be
+redirected to your page.<br>
+<br>
 <span style="font-weight: bold; text-decoration: underline;">Example:</span><br
  style="font-weight: bold; text-decoration: underline;">
 <br>
@@ -305,14 +309,20 @@ $this-&gt;inputCorrect = true;<br>
 <h2>5. Defining that your module is ready for LDAP add/modify</h2>
 Before a new account can be created or modified all modules are asked
 if they are ready.<br>
-There are two functions which control the module status. The <span
- style="font-weight: bold;">module_ready()</span> function has to
+<br>
+There are two functions which control the module status:<br>
+The <span style="font-weight: bold;">module_ready()</span> function
+has to
 return <span style="font-style: italic;">true</span> if the user may
-move to another module page. If it is <span style="font-style: italic;">false</span>
-the user will be redirected to your module page. The second function is
+move to your module page. If it is <span style="font-style: italic;">false</span>
+the user will be shown an error message that your module is not yet
+ready. You can use this if your module depends on input data from other
+modules (e.g. you need the user name from posixAccount first).<br>
+The second function is
 <span style="font-weight: bold;">module_complete()</span>. The user
-cannot do the LDAP operation if one or modules return <span
- style="font-style: italic;">false</span>.<br>
+cannot do the LDAP operation if one or more modules return <span
+ style="font-style: italic;">false</span>. This defines if all needed
+input data for your module was entered.<br>
 <br>
 <span style="font-weight: bold; text-decoration: underline;">Example:</span><br
  style="font-weight: bold; text-decoration: underline;">
diff --git a/lam/docs/devel/modules-specification.htm b/lam/docs/devel/modules-specification.htm
index 2c5bdc82..315056dc 100644
--- a/lam/docs/devel/modules-specification.htm
+++ b/lam/docs/devel/modules-specification.htm
@@ -529,7 +529,7 @@ several helper functions.<br>
 </table>
 <br>
 Your module might depend on input of other modules. This function
-determines if the module button on the account page is active or not.<br>
+determines if the user can change to your module page or not.<br>
 The return value is <span style="font-weight: bold;">true</span> if
 your module accepts input, otherwise <span style="font-weight: bold;">false</span>.<br>
 <br>
@@ -545,12 +545,10 @@ your module accepts input, otherwise <span style="font-weight: bold;">false</spa
   </tbody>
 </table>
 <br>
-This function is called after your module has processed the POST input
-data.<br>
-If there was an input error and you want to display a page again then
-return <span style="font-weight: bold;">false</span>. If <span
- style="font-weight: bold;">true</span> is returned the next module
-page will be displayed.<br>
+This function tells LAM if it can create/modify the LDAP account. If
+your module needs any additional input then set this to <span
+ style="font-weight: bold;">false</span>. The user will be notified
+that your module needs more input.<br>
 <br>
 <h3>2.2.4. get_help</h3>
 <br>