A shor explanation on the ID field can be found here: http://ez.no/doc/extensions/online_editor/4_x/usage/the_toolbar/the_link_button.
There is more about the ID as identifier in a link/url, see http://www.w3.org/TR/REC-html40/struct/links.html and look/search for "id". An example how this ID is used, http://www.javascriptkit.com/script/script2/outlinemenu.shtml
Let me know if you need more info.
Regards Robin
Board member, eZ Publish Community Project Board - Member of the share.ez.no team - Key values: Openness and Innovation.
