@su is a command that allows you to temporarily redirect everything you type
to a project. It stands for 'Switch user'. Simply type '@su <project>' and
anything you type after that will act as if you were connected as the project.
Note that the project must be connected for this to work. (See ?project-usage)
To stop @su and return to normal command mode, type one of the following:
"exit", "logout", or "@abort".