Open via HELiOS
If you activate this function, the HELiOS part search mask will be displayed in Inventor by default; this will also be the case when you select File > Open. The normal Inventor dialogue for the opening of files appears when you close the HELiOS window by clicking the 
icon.
Show/hide workspace
Click this buton to hide or show the Workspace window in the user interface.
Options
Opens the HELiOS Options dialogue window with a wide range of settings options.
