The default size for a new board is 6x4 inches the tutorial board is 30mm x 30mm. The board shape is shown by the black region with a grid in it. Grids are discussed in more detail later in the tutorial. The other useful shortcut is Ctrl+G, which opens the Cartesian Grid Editor dialog, in which you can change the grid from dots to lines, and change the grid color. Note the shortcuts shown in the menu use Ctrl+Shift+G to open the Snap Grid dialog, which is handy when you want to type in a specific value. To change the snap grid at any time, press G to display the Snap Grid menu, from where you can select an imperial or metric value. You may have noticed that the current snap grid is 5mil (or 0.127mm, which is the default imperial snap grid converted to metric). To change the units, either press Q on the keyboard to toggle back and forth between Imperial and Metric units, or select the View » Toggle Units command from the menus. For this tutorial, metric units will be used. The current design space X / Y location and Grid are displayed on the Status Bar, which is displayed along the bottom of the editor. Select the Edit » Origin » Set command to set the Relative Origin use the Edit » Origin » Reset command to reset it back to the Absolute Origin. ![]() A common approach is to set the Relative Origin to the lower-left corner of the board shape. The PCB editor has two origins: the Absolute Origin, which is the lower left of the design space, and the user-definable Relative Origin, which is used to determine the current design space location – the coordinates shown on the Status Bar are relative to this origin. There are a number of attributes of this blank board that need to be changed before transferring the design from the schematic editor, including: Task
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