Zoom in/Zoom out – Zooms in and out in the work area
Fit view to window – Adjusts the size of the work area so that all positions, margins etc. fit in
Show previews – Enables/disables previews on the main work area. Having this item enabled makes your work easier but previews take a little time to generate
Show rulers – Shows/hides rulers at the sides of the work area. These rulers are also useful to edit dimensions of positions
