Xpress-IVE is a graphical user interface to Xpress and, by default, has four panes. Panes within the window can be re-sized or "un-pinned" so that they auto-hide. If you want to retrieve a pane after un-pinning it, you can click the appropriate pin or use the View menu. If you get into a real mess, just click on the button to recover the original layout!
Here Xpress-IVE displays information about the various entities used in the Mosel programme. For a given entity,
Here Xpress-IVE displays compile-time and run-time information, in particular error messages.
Here Xpress-IVE displays run-time data. This is available by clicking on the appropriate tab.
As an editor, it is a lot like Microsoft Word.