5299feff_FVWM___Man_page___FvwmTabs__Description
[Menu option] Options [Description] 
shows a sub-menu with the following items: Show Internal Titlebar toggle the display of the titlebar below the tab-buttons. Use Main Titlebar set the titlebar of the FvwmTabs window to the title of the selected tab. Auto Resize Automatically resize all windows to the dimensions of the largest window in the tab-manager.. Swallow Overlapping (D&D) toggle the swallowing of overlapping windows.
FVWM - Man page - FvwmTabs
Description