Radio Shack TRS-80 Operation Manual page 45

computer Graphics Operation Manual
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Sets the three specified pixels ON (through the three PRESET
statements), pauses, and then turns the three pixels OFF.
PRESET(3~~~,l~~~),1
The values for
(~)
are accepted, but since the
coordinates are beyond the parameters of the screen, the
point is not PRESET.
PRINT +-3,
Write Text Characters to the Graphics Screen
PRINT #-3, is used to write text characters to the Graphics
Screen. This is the easiest way to display textual data on
the Graphics Screen. Characters are displayed starting at
the current Graphics Cursor and going in the direction
specified by the most recently executed GLOCATE command. If
a GLOCATE command was not executed prior to the PRINT #-3,
command, a direction of ~ is assumed.
PRINT #-3, will only print text characters (see Appendix C
of the Model III Operation and BASIC Language Reference
Manual). Each character displayed in the
~
or 2 direction
uses an 8 X 8 pixel grid; each character displayed in the 1
or 3 direction uses a 16 X 8 grid. Executing this command
will position the Graphics Cursor to the end of the last
character that was displayed.
Displaying text in direction
~
engages a wraparound feature.
If the end of a line is reached, BASICG will continue the
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