Custom parameters are parameters that you create for your own purpose. Proxy parameters are linked copies of other parameters that you can add to your own custom parameter sets.
You can:
• Create custom parameter sets to hold your custom and proxy parameters.
• Add custom parameters to custom parameter sets.
• Connect custom parameters using expressions, parameter linking, or scripted operators to control any aspect of your scene.
• Make proxies of existing parameters to create your own simplified property editors.
• Display and edit custom and proxy parameter information in 3D views.
• Create custom preferences to hold settings for custom plug-ins.
For information about custom parameters on components like points and polygons, see User Data on Components.
Autodesk Softimage v.7.5