set_menu_opts() turns on the named options for menu and turns off all other options. Options are boolean values that can be OR-ed together.

menu_opts_on() turns on the named options for menu; no other option is changed.

menu_opts_off() turns off the named options for menu; no other option is changed.

menu_opts() returns the current options of menu.

The following values can be OR'd together to create opts.

O_ONEVALUE

Only one item can be selected from the menu.

O_SHOWDESC

Display the description of the items.

O_ROWMAJOR

Display the menu in row major order.

O_IGNORECASE

Ignore the case when pattern matching.

O_SHOWMATCH

Place the cursor within the item name when pattern matching.

O_NONCYCLIC

Make certain menu driver requests non-cyclic.