Original Enhancement (miscellaneous)

SWAP x,y
interchanges the values of variables x and y.
Same as Microsoft BASIC's SWAP.
Notice that SWAP is not contained in the standard.

BEEP
plays the sound specified as the Windows Default Beep sound.

BEEP exp1, exp2
invokes the BEEP function on Windows API.
exp1 and exp2 mean the frequency in hertz and the duration in milliseconds. Note that exp1 and exp2 have no efficacy on Windows 95/98/Me.

PLAYSOUND File_Name
plays the sound file using Windows API.
PLAYSOUND File_Name ,ASYNC
plays the sound file asynchronously, that is, does not wait for the finishing of the play.