`\line(x-slope,y-slope){length}`

The `\line` command draws a line of the specified length and slope.

The slope is determined by `(x-slope,y-slope)` which are signed
integers of magnitude less than or equal to 6 and which have no common
divisor except for plus or minus one; For example (1,0) is a horizontal
line; (1,1) gives a slope of
45 degress; (0,1) is a vertical line; (-1,1) is 135 degrees.

The **horizontal** extent of the line is given by the
`length` parameter, except in the case of a vertical line in
which case `length` specifies the vertical height.

See also Environments, picture

See also

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Revised by Sheldon Green, agxsg@giss.nasa.gov, 12 May 1995.