### 17.4 Plot Annotations

— Function File: grid (arg)
— Function File: grid ("minor", arg2)

> For two-dimensional plotting, force the display of a grid on the plot. The argument may be either `"on"` or `"off"`. If it is omitted, the the current grid state is toggled.

> If arg is `"minor"` then the minor grid is toggled. When using a minor grid a second argument arg2 is allowed, which can be either `"on"` or `"off"` to explicitly set the state of the minor grid, or alternatively a positive integer specifying the number of minor grid lines.

> See also: plot, semilogx, semilogy, loglog, polar, mesh, contour, bar, stairs, replot, xlabel, ylabel, title.

— Function File: title (string)

> Specify a title for a plot.

> See also: plot, semilogx, semilogy, loglog, polar, mesh, contour, bar, stairs, replot, xlabel, ylabel.

— Function File: xlabel (string)
— Function File: ylabel (string)
— Function File: zlabel (string)

> Specify x, y, and z axis labels for the plot. If you already have a plot displayed, use the command `replot` to redisplay it with the new labels.

> See also: plot, semilogx, semilogy, loglog, polar, mesh, contour, bar, stairs, replot, ylabel, title.

— Function File: top_title (string)
— Function File: bottom_title (string)

> Makes a title with text string at the top (bottom) of the plot.