Ok Monster
A signature is a space that this and or other bulletin boards(forums) allow you to used to add quotes or like I have done add links to my favorite zscripts or add your link to your own website kind of stuff. You can find options for it in the User Options link just under the Zbrush url line above, next to FAQ.
Mine is all those orange names beneath this message…Psnap is there.
By default (see preferences menu in zbrush) zscripting is automatically on so if you open zbrush and start working it is recording your steps. You can set it to be off. Then you can soley use the zscript menu to record, stop, save your actions in any manner you wish. There is probably some info and how to’s in the help menu in zbrush.
hope that helps some.