Customize  You can modify the look of the graph many ways.

You can change the x-values (the Domain).

You can change the y-values (the Range).

You can change the thickness and colours of the curves.

You can put comments on the graph.

You can rid of the tooltips.

You can undo the changes by clicking Restore Defaults.

If there is a particular way of doing graphs you prefer, you can set that up as a Profile and use it whenever you want.

You can change the way CalGraph looks too, with the graph taking the whole window, or splitting the window into two parts, the buttons and the graph.

Once the graph is the way you like it, you can print it or cut and paste it into another program.