BaseJump is a callback script manager which will let you :

*Jump to BaseObject level in the modifier stack whenever an object is selected
*Jump to a specified modifier class on the stack (if present)
*Jump to a specified level on the modifier stack (if present)

For example, if you have multiple text shapes with an extrude modifier on top and want to edit the text field manually, you can set BaseJump to jump to the BaseObject. Now you can select every object and the modifier stack will always show you the desired level.

Another example - if you have a number of objects that have a Bend modifier deep in the stack and you want to edit its Angle, you can tell BaseJump to switch to the Bend modifier. Every time you select a new object, the Bend modifier will be selected in the stack.