User activity

Would like to find the volume of a revolved profile, 360*. Found VOLUME () in the help menu, but no hint what to do with it. Couldn't find anything in the Coolbook, either. I assume it involves a little scripting in GDL. Could somebody clue me in? Th...
Save a new version of a previously saved .gsm object replacing that object by using the same name, shouldn't all instances of that object update themselves automatically? Seems like they used to, but not with v8.1, or is there something that can be d...
Use the Marque tool to copy a section/elevation. Paste on a Story. Select what was just pasted and delete. Not all the lines are deleted! And then they can't be selected. They will not go away. Anybody else notice this? Can it be fixed?
ArchiCAD can design your buildings, but did you know it can print your business cards, too? http://www.buildart.com/printingcards
Has anyone else noticed this? Thought some door ids had changed without human intervention on a file last week, but wasn't sure. Then, today, in another file more altered ids. This time I located an earlier pdf of the plan and yes, two door ids at le...