A workspace is a directory that contains Projects, their metadata, and information about the state of the IDL Workbench. A workspace can also contain other programs, scripts, and supporting files that are not contained within a Project.
When the IDL Workbench starts it creates a default workspace located in your home directory (as defined by the $HOME environment variable on UNIX-like platforms, and in Documents and Settings\username or \Users\<username>\IDLWorkspace8.x on Windows platforms).
If you later want to change workspaces from the default to another existing folder, do one of the following:
Each workspace “remembers” the arrangement of the IDL Workbench views and perspectives that you set during your session. You can have as many different workspaces as you like, but only one workspace can be loaded at a given time.