Migration documentation for users of previous versions

Some of the changes in recent versions of cmgui will cause some old commands to break - changes may need to be made to some old command files. Below are links to documents detailing these changes.

Changes in recent versions

• Migrating to Cmgui 2.8
  • Scenes and graphics filters
• Migrating to Cmgui 2.9
  • Removal of 'group regions'
  • No default line graphics
  • Simplified creation of nodal derivatives