OnlyModButtons - bakkeby/dusk GitHub Wiki
The AllowNoModifierButtons functionality allows for button keybindings that have no modifiers to be used for certain actions.
For example the feature allows windows to be moved and resized using the mouse only (i.e. no need to hold down a modifier key on the keyboard).
The OnlyModButtons flag explicitly disables this feature for individual clients - the use case
being that for some applications (e.g. browsers) you may want to leave these buttons for their
intended use (i.e. to go back one page or to go forward one page).
The flag can be set via client rules or it can be toggled during runtime with the
togglenomodbuttons function using the default keybinding of Ctrl+Alt+Tab.
If the AllowNoModifierButtons functionality is disabled then this flag has no effect.