those functions are not listed in the python helpfile yet, but you can read about their required arguments and description if you just start typing them in the Rhino Python editor like
rs.coerce… (Under Windows).
Alternatively you might take a look what each of the functions does in the
utility.py file which should be located here:
Also note my reply to your other post here. Maybe you can just create the TextObject at the right position to prevent that it has to be moved at all ?