### Hypertext Help with LaTeX

## \vector

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

The `\vector` command draws an arrow of the specified
length and slope with the arrow head at the opposite end of the
line from the reference point (see
`\put`).

The slope is determined by `(x-slope,y-slope)` which
are signed integers of magnitude less than or equal to 4 and
which have no common divisor except for plus or minus one; For
example (1,0) is a horizontal arrow pointing right; (1,1) gives
a slope of 45 degress; (0,1) is a vertical arrow pointing up;
(-1,1) is at 135 degrees.

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

See also Environments,
picture

See also `\line`

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Revised 12 May 1995.