The Presentation Viewer
The Presentation Viewer shows the content of a presentation.
If the content of the presentation changes (because one of the contained
matrices changed) the viewer shows the changes immediately.
Selecting a cell its content becomes bold and its coordinates appear on the
bottom. If the cell is part of of a matrix the name of the matrix appears in
the status bar on the bottom together with the coordinates. We say that the
matrix is selected in the presentation. 
Double-clicking on the status bar shows the status bar text in a message box.
The Viewer has a toolbar with the
following choices (the same as the presentation grid in the presentation editor): 
  - Fit Columns: changes the width of the presentation's columns to
    display their whole content. It is based on a sample of the rows and
    therefore it can be inaccurate.
 
- Refresh: shows the correct content of the presentation after
    removing a collision problem.
 
 
- Copy Selection: copies the selected rows of the displayed
    presentation to the clipboard as cells.
 
 
- Export: allows to export the
    presentation to a (HTML, csv, xls) file.�
 
 
- Edit <matrix name-package>: edits the selected matrix
    using the matrix editor. In this way you
    can change the content of the matrix contained in a presentation directly
    from the presentation.
 
 
- Print: Prints the content of the presentation with a
  printer.