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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