Draw Non-deletable watermark in AutoCAD, and the watermark can be dispalyed without ObjectArx loaded, and will never be deleted.

Any lines, arcs, circles, texts, polylines and inserts can be used to make non-deletable watermark. It can automatically fill in rectangle area with defined rows and columns. The size and color of watermarks can be defined too. Default values are predefined for easy using.

You can use above entities to make any logo. If you want other type entities other than line, arc, circle, text, polyline, you can make an inserted block with any type entities.

Lines, arcs, circles, texts, polylines for watermarks will be automatically changed to the color you defined, default color is dark grey. Entities in inserted block for watermarks remain their old color, so any colors can be used as watermark.