Axes
The Axes 
option allows you to add horizontal / vertical axes with x-y coordinates, anywhere on a view.
To add Axes:
- Select Axes from the toolbar menu or the Tools menu.
- Enter the first point graphically with the mouse, or enter x,y coordinates in the prompt line.
- As you move the mouse, scaled horizontal/vertical axes will be drawn between the point entered in step 2 and the current cursor location.
- Enter the second corner graphically with the mouse, or enter x,y coordinates in the prompt line, and the Axes will be added to the view.
- By default, Axes will initially display Global Coordinates corresponding to the coordinates of your model. Axes can also display Local Coordinates (lower-left corner = 0, 0), with the Format Tool dialog.
Snap options are available in the right-click menu if you want to snap exactly to certain coordinates.
TIP: After an Axes object has been added, it can be moved, re-sized, formatted, etc. See the Edit Tools Overview topic for details.