[Zope] Python Scripts

I'm trying to create a Script (Python) object on the fly. I know the constructor is manage_addPythonScript and the metatype is 'Script (Python)'. What I can't figure out is the appropriate Dispatcher? I've looked and elsewhere to no avail. I have tried manage_addProduct['OFSP'], but it's clearly not the right one. Some other obvious permutations also failed. I've been led to believe that the proper dispatcher for foldershi items is manage_addProduct['OFSP'], but what about for other products? In the same vein, what is the Dispatcher for ZClasses? manage_addZClass?