A tabcontrol procedure that relies on a database of controls stored in the userdata for the tabcontrol. Each tab of the tab control has an associated userdata field that contains the list of controls that are to be shown when the tab is selected. A userdata field for the current tab makes it easy to determine just which controls need to be hidden when the tab is changed. Plus associated functions to make and edit the databases of tab controls, including adding/removing a tab to a tab control with all its associated controls. An associated procedure file provides a GUI to quickly assign controls to tabs of tabcontrols.

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