ACT_PUBLISH_UC_IMUC is an action button that prepares the UserCalc to be published.
When the UserCalc has been Compiled, the UserCalc may be 'pre-published'. This will change the status from 'Under Construction' to 'To Be Published'. Once in this status, the UserCalc may be officially published in IMUCA.
If a user has taken a copy of an 'In Production' UserCalc and wishes to test it without losing the original UserCalc, then they may publish it. This means that wherever the original UserCalc is referenced,Personality will now use the newly published version.