facemenu-set-underline

facemenu-set-underline is an interactive Lisp function.

It is bound to M-o u, <C-down-mouse-2> <fc> u, <menu-bar> <edit> <props> <fc> u.

(facemenu-set-underline)

Select face `underline' for subsequent insertion.
If the mark is active and there is no prefix argument,
apply face `underline' to the region instead.
This command was defined by `facemenu-add-new-face'.