Tips and Tricks: Remove Acad.vlx Virus from AutoCAD Products.

Most AutoCAD based products have reported malicious attack causing your drawing files to corrupt and render unuseful. This is not an actual AutoCAD file provided by Autodesk. 

When the malicious file Acad.vlx is loaded in AutoCAD it creates a copy of itself in the Help folder under C:\Program Files\AutoCAD 20xx\Help\logo.gif. It also modifies other files. It changes the system variable ACADLSPASDOC from default value 0 to 1, allowing Acad.vlx to be loaded in other drawings, thereby corrupting them.

Tips and Tricks: Mirror Objects without Mirroring Text.

When Mirroring Object by default text, attributes and attributes definition will get flipped or turned upside down in the mirror image. The text will have different alignment and justifications after the objects are mirrored. If you don’t want the text to be reversed, set the MIRRTEXT system variable to ‘0’. 

Tips and Tricks: Improving Display Performance of AutoCAD Drawings.

To improve the Display performance of your drawing you can simplify the display of certain kinds of objects and speed up the performance. 

1. Turning off Solid Fill.

Turning off Solid fill Mode, certain object properties like wide Polylines, Solid-filled Polygons, Gradient Fill and Hatches are displayed in outline form as shown in the below figures.