Xconfig is a powerful tool for configuring and managing Xmanager profiles. A profile contains Xmanager options such as window mode, fonts, color, security, etc. You can create multiple profiles using Xconfig and specify a different profile for each session.
When you run a session in Xbrowser or Xstart, the session brings up Xmanager with the profile seleted in the session. If you want to configure a different window mode for a session, you can create a new profile in Xconfig, change the window mode and select it in the session.