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Unloading a project from the workspace can enable you to work more efficiently. For example, your workspace may contain multiple projects with multiple configurations. To reduce the time it takes to open and close the workspace, you can unload projects that you aren't currently working on.
Unloading a project does not delete it from the workspace. If a project is currently unloaded, it is simple to load it again.
To unload or load a project
When the project is unloaded, its icon changes to a folder and the words '– not loaded' appear next to it.