DIFFERENTIAL DISPLAY OPTION  
This option makes it easier to see when multiple fragments are stacked up at the same position on a DNA gel. When this option is 'on', bands with multiple fragments stacked up appear darker, regardless of their position on the gel. 
When this option is 'off', relatively large fragments appear darker than relatively small fragments, regardless of position.  The default is to leave this option 'off'.  
Note to instructors: the default can be changed by modifying the 'options.txt' file in the Case It folder.

MAGNIFY OPTION
This option magnifies the gel/blot by a factor of two.  Clicking the magnifying glass icon to the left of the gel label will also magnify and restore the gel.
When the magnified gel is dragged, it will return to its original size, so it will need to be magnified again at the new position if so desired.

