If you create all the tabs as usual and then export the whole script into one file, you will notice that QlikView actually keeps the code of the various tabs separated. It does this by entering a line at the beginning of each tab section with the tab name after a special ///$ prefix.
Now for the fun part: if you copy-paste into a new blank tab the whole exported script as written by QlikView (i.e. including the tab titles and their special prefix), save it, close it, and reopen it... QlikView automatically recreates those tabs for you.
And this trick of course WORKS ALSO IN THE HIDDEN SCRIPT, so if you put a "multitab" exported code in that single hidden script tab, you save it, close it and reopen it... you have a script with more hidden tabs.
