AutoCAD 2D Tutorial
When you first launch AutoCAD, you will see the main body of the screen, known as the
Graphics Screen. This is where a drawing will be displayed and edited. The rest of the
AutoCAD interface is how you access and enter AutoCAD commands and change
settings in the AutoCAD drawing. ...
Controls the size of the crosshair. The allowable range is from 1 to 100
percent of the total screen. At 100% the ends of the crosshair are never
visible. When the size is decreased to 99% or below, the crosshairs
have a finite size, and the crosshairsâ ends are visible when moved to
the edge of the graphics area. The default size is 5%.
Some commands evoke dialog boxes which are typically used to enter
information or change settings. The filedia command suppresses display
of the file dialog boxes.
All AutoCAD commands can be typed in at the command line. Many
commands also have one or two letter aliases that can also be typed as
shortcuts to the commands.
...
Source: fetweb.ju.edu.jo
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