Basic
DEF USR[number]
=
offset
Defines the user number and segment offset of a subroutine to be
called by the USR function.
Number may be an integer in the range 0 to
9.
Default
=
USR0.
Offset
is the number of bytes from the current segment address
where the subroutine begins. Must be an integer in the range 0 to
65535.
DEFUSR
=
0
DEF
USR3
=&H0020
DELETE linel -line2
Deletes linel through line2
of
the program in memory.
If
you omit
linel, BASIC deletes from the beginning of the program. If you omit
line2, BASIC deletes to the end of the program. Use a period
(.)
to
indicate the current line.
DELETE 70
DELETE
.-I10
DIM
array(dimension)[,array(dimension),
...I
Sets aside storage for
arrays
with the dimensions you specify.
Array
is the variable name of a string, integer, single precision, or
double precision variable name.
Dimension is
1
or more integer numbers separated by commas that
define the dimensions
of
the array.
DIM
AR(100)
DIM
L1%(8,25)
DRAW string
Graphics. Draws an image on the screen.
String specifies
1
or more of the movement commands listed below.
Movement Commands
Movement commands begin movement from the current graphics
position, which is the coordinate of the last graphics point plotted
with another graphics command. Current position defaults to the
center of the screen if no previous graphics command has been
executed.
28
Tandy
1000
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