Page 125 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

The Dimension command lets you annotate part of a design with dimensions.

ERC

You should not need this from the Board Editor because you should not be changing things there that
affect the electric rule checker (ERC).

Show

This command has a similar purpose to the Information command except that rather than opening a

little window that gives you details of the component selected, it displays the information in the status
area at the bottom of the screen.

Mark

The Mark command allows you to set a local origin anywhere on the Board Editor so that you can see
the coordinate values relative to that point. Clicking on the “GO” button (looks like a traffic signal)
cancels the Mark. This can be used to measure things on the board, but frankly, I have never found a
good use for it.

Change

The Change command allows you to change almost anything about an object on the schematic
diagram. You can, of course, change these things using the Information command.

Miter Wires

This command allows you to put a curve in a line or polygon. To use it, select the command, and then
click on a corner of a line. You can then set the radius in the dropdown in the Parameter toolbar.

Optimize

This removes unnecessary midpoints from a straight line.

Signal

The Signal command would allow you to define signals in the board layout, but if you try to click on
it, EAGLE just tells you that you can’t use it. It will only work if forward/backward annotation is
disabled, which would be silly. Just ignore this feature.

Attributes

You can add your own custom attributes to a component and then decide whether you want them to be
displayed. See Chapter 4 for an example of using this to add a “power” property to a resistor.

Autoroute

This command runs the autorouter. More on this later.

DRC