This tab allows you to add new options that you can select from the main window. The main ones have been added already, and are in the format for recent viewers.
The image above shows the old format for pre 1.20 viewers, which was the default for VWS versions 2.0.0.*.
If you only use viewers version 1.20 or later, you can change the format for these to the 1.20 format, which is the same except for two minus signs in front, instead of one (for these commands).
Note: If you add your own options here, please make sure that they are in a format that the viewer you use supports. There is a difference between the format for viewers before 1.20, and 1.20 or later, although the pre-1.20 should continue to be supported for some time.