GWBASIC User's Manual

GW-BASIC User's Guide
. (period) A period after a note increases the playing time of the note by 3/2 times the
period determined by L (length of note) times T (tempo). Multiple periods can
appear after a note, and the playing time is scaled accordingly. For example, A.
will cause the note A to play one and half times the playing time determined by
L (length of the note) times T (the tempo); two periods placed after A (A..) will
cause the note to be played at 9/4 times its ascribed value; an A with three
periods (A...) at 27/8, etc.
Periods may also appear after a P (pause), and increase the pause length as
described above.
Xstring; Executes a substring, where string is a variable assigned to a string of PLAY
commands.
Because of the slow clock interrupt rate, some notes do not play at higher
tempos; for example, 1.64 at T255. These note/tempo combinations must be
determined through experimentation.
>n A greater-than symbol preceding the note n plays the note in the next higher
octave.