Description Determines which other floaters are tabbed together with this one the first time the floater appears. If any listed floater has appeared previously, it is not included in the tab group. Thus, to assure that two custom floaters are tabbed together, each should reference the other in each initialTabs() function.
Arguments None.
Returns A string of the form "floaterName1,floaterName2,...floaterNameN".
Example The following instance of initialTabs() specifies that the first time the floater appears, it should be tabbed together with the scriptEditor floater:
function initialTabs(){
  return "scriptEditor";