If you wish i am willing to write a module for it. sounds like something that should go in the 'util' module. util module already manages system module page as to which fieldset to be collapsed or expanded by default. this seems like a great add-on to such functionality.
In the form when we manages the user permissions, how can I set each module an fieldset?It would be easier if all modules come collapsed, not a full table like today.Even my submodules, could be sub-fieldsets :)
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