groff 1.23.0 added .MR to its -man macro package. The NEWS file states
that the inclusion of the macro "was prompted by its introduction to
Plan 9 from User Space's troff in August 2020." From d32deab it seems
that the name for Plan 9 from User Space's implementation was suggested
by groff maintainer G. Brandon Robinson.
Not sure if the intention was to make these definitions compatible, but
it would be nice if they were.
Currently, Plan 9 from User Space's .MR expects its second argument to
be parenthesized. groff's .MR does not. This results in extra
parentheses appearing in manual references when viewing Plan 9 from User
Space's manual pages on a system using groff.
86 lines
1.6 KiB
Groff
86 lines
1.6 KiB
Groff
.TH PAINT 1
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.CT 1 graphics
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.SH NAME
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paint \- create image files by drawing with a mouse or other pointing device
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.SH SYNOPSIS
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.B paint
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[
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.I file
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]
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.SH DESCRIPTION
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.I Paint
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displays a canvas upon which can be drawn lines using the mouse holding
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down buttons 1 or 2 for foreground or background color. The canvas
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may be moved with button 3. Colors and brush sizes may be selected by
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clicking on the palette at the bottom of the screen with buttons 1 or 2.
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.PP
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If the optional
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.I file
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argument is specified, then it is read and used as the canvas.
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.I Paint
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only recognizes Plan 9 bitmap format (see
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.MR image 6 ).
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.PP
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A number of immediate keyboard commands are recognized:
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.TP
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.B u
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Undos the previous action.
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.TP
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.B c
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Clears the canvas with the background color.
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.TP
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.B 1-9
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Select brush size.
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.TP
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.B f
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Select flood fill brush.
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.TP
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.B +
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Doubles magnification.
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.TP
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.B -
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Halves magnification.
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.TP
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.B esc
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Centers the canvas and resets magnification.
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.PP
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Hitting any other key on the keyboard shows a command prompt
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where the following commands may be entered:
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.TP
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.BI r file
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Reads the canvas from
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.I file.
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.TP
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.BI w file
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Writes the canvas to
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.I file.
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.TP
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.BI < command
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Executes
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.I command
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and reads the canvas from its standard output.
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.TP
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.BI > command
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Executes
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.I command
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and writes the canvas to its standard input.
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.TP
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.BI | command
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Transforms the canvas by piping it thru
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.I command.
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.TP
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.B q
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Quits the program.
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.SH SOURCE
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.B /sys/src/cmd/paint.c
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.SH "SEE ALSO"
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.MR resample 1 ,
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.MR rotate 1 ,
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.MR crop 1 ,
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.MR jpg 1 ,
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.MR page 1 ,
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.MR image 6
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.SH HISTORY
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.I Paint
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first appeared in 9front (October, 2011).
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