InstallMate sets this variable to the alias of the folder associated with the the currently active feature (in the active OptionTree control). This variable is used to display the feature's installation path in the installer's user interface (by using double indirection, thus: <<TsuFeatureFolderAlias>>). You can set the feature folder aliases in the Folder alias attribute of each feature.
You can refer to this variable as <TsuFeatureFolderAlias>. To retrieve the actual folder path, use double indirection: <<TsuFeatureFolderAlias>>. Do not change its value; it is set and updated automatically by InstallMate.