To import a single data set directly from the MATLAB workspace, there are two variants:
(file idimp.htm)
Earlier created models in the Toolbox's IDMODEL and IDFRD formats can be imported from the MATLAB workspace using the Models pop-up menu. Also models in the Control System Toolbox's LTI model formats can be directly imported.
(file idimp.htm)
Sessions are opened, closed, and saved under the main ident window's File menu.
Only one session can be open at any time. You can however merge another, previous session into the current one, using the File menu.