mr-legend_wiki/lib/plugins/ckgedit/action/entities/ENTITIES.HOWTO

Adding Entities to the Entities Defintions Array.

You create an Entity definition file with the format illustrated below, and then run the php
script  ents_seri.php

Name your definitions file add.ent

Then at the command line type:
    php ents_seri.php

Alternatively, you can give your entity definition file any name you want and feed
the file name to the script at the command line:
         php ents_seri.php  your_entity_file     

This creates a new entities file called ent.ser, which must then be copied to
the fckg/action subdirectory.  You would be wise to first back up the original ent.ser 
before over-writing it.

There are two definition files in the action/entities:  ents.data  and fcked-ents.data.
These are required and must not be removed from the directory.

The definition file has the following format:

character
entity numeric code
entity character code

character
entity numeric code
entity character code

etc.

There is one empty line between each definition.  Here is an actual example.
 
<
&#60;
&lt;

>
&#62;
&gt;

¡
&#161;
&iexcl;

¢
&#162;
&cent;

£
&#163;
&pound;