Radio Shack TRS-80 Operation Manual page 163

Computer Graphics Operation Manual
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7. "Coarse" vertical lines
CHR$ (&HF.e)
Hex Decimal
8. One-pixel dots
CHR$(&H22)+CHR$(&H.e~)
Hex Decimal
22
"
34
,
9. Two-pixel dots
CHR$(&H99)+CHR$(&H66)
Hex Decimal
99
66
1'.
Pluses ("+")
CHR$(&H3C)+CHR$(&H3C)+CHR$(&HFF)
, ,
1
1
1
1
, ,
, ,
1
1
1
1
, ,
1 1
1 1 1 1 1
1
Hex Decimal
3C
6'
3C
6'
FF 255
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