HP 39gs

TLINE <x
1
>;<y
1
>;<x
2
>;<y
2
>
This command is the same as
LINE except that the line
drawn reverses the current set/unset value of all pixels.
This means that it can be used to erase previously
drawn lines.
If you would like to see this command in action, download the aplet called “Sine Define” from the author’s
website The HP HOME view (at
http://www.hphomeview.com
)
. This aplet contains extensive use of this
command.
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