else

Used in conjunction with if ... then ... end if commands it defines the block of commands to be executed if all previous conditions reveals to be false.

Syntax:
if condition expression then
        commands to be executed if condition is true
else
        commands to be executed if condition is false
end if

Example:
setautoback(50)
prints("press a number key")
waitKey
x$=chr$(inkey)
if x$="1" then
    prints("press 1")
elseif x$="2" then
    prints("press 2")
else
    prints("press other key")
end if
if x$="4" then :prints("good bye"):end if
prints("press esc to exit")
waitKey (27)

See also if ... then ... end if and elseif commands.