Draws a point on the graph screen.

PtOn *x*, *y*

*or*

PtOn {*x1, x2, x3*}, {*y1, y2, y3*}

**Menu Location**

This command can't be found in any menu besides the command catalog.

This command works on all calculators.

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The `PtOn` command draws a point on the graph screen. It uses point coordinates, which means that the result is determined by window variables: the x-coordinate must be between xmin and xmax, and the y-coordinate must be between ymin and ymax (with (xmin,ymin) being the bottom left and (xmax,ymax) the top right corner).

Unlike pixel commands such as `PxlOn`, however, `PtOn` won't give an error if the coordinates happen to be outside these bounds — it simply won't have any effect (exactly the same as the 83+ version of `Pt-On`).

# Advanced Uses

`PtOn` can also be used with two lists of the same size. In that case, it will draw the points for every pair of elements (xlist[n], ylist[n]). This can be used as an alternative to plots (see `NewPlot`) to plot a set of points.