Page 227 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

The three lines at the top starting with a # are just comment lines that explain what the script does.
It is a script to be run in the Board Editor that creates a Euroboard. Euroboard is a standard size of
board sometimes also called a Eurocard.

Switch to the board layout (creating one if needed) for your example project, and delete the
existing wire rectangle in the “Dimension” layer. To run the command, click on the small “SCR” icon
on the toolbar. This opens a dialog window from which you can select the script euro.scr. When
it has run, the board should look something like Figure 10-3.