Files
RevitSdkSamples/snapshot/2008/SDK/Samples/InvisibleParam/CS

This sample show how to use Parameter file to store invisible and visible parameters.

1.	Run this command.

2.	Open file RevitParameters.txt to see the result.

3.	Draw a Wall.

4.	Open Wall¡¯s Property dialog, There will be a share parameter: Other ->VisibleParam in Instance Parameters.