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Function Description: The PREVIEWEFFECT system variable is used to specify the preview visual effect when selecting objects. Type : Integer Saved in : Not saved Initial value : 2 Range : 0,1,2 System Variable Value: 0 : dashed(default display style... Read More

Function Description: The PREVIEWFACEEFFECT system variable is used to specify the preview visual effect when selecting face sub object Type : Integer Saved in : Registry Initial value : 0 Range : 0,1 System Variable Value: 0 : do not set highlight... Read More

The UNDO command is used to give up the effect of operations. Command Access: Command : UNDO Command Prompts: Enter the number of operations to undo or [Auto/Control/BEgin/End/Mark/Back]<1>: Function Description: In the command prompt line, it... Read More

Function Description: The SELECTIONAREA system variable is used to control the display effect of selection area. Type : Integer Saved in : Registry Initial value : 1 Range : 0,1 When selecting objects, the selection area is created by "Window(W)", ... Read More

For easier viewing or special effects, you can change several display properties of raster images in a drawing. You can adjust brightness, contrast and fade for the display of an image as well as for the plotted output. To darken or lighten an image,... Read More