If the cell has a comment, this will also be read. Another example of a LookOUT script is the one that is used to control the CD player in Windows. Graphically this has command buttons that allow the player to be started, stopped, paused, etc. This interface is completely remapped to the numeric keyboard by the LookOUT script, which uses the '4' key to start, the '5' key to stop, etc. In this way a completely new interface is created.
Script files can also contain help information that explains the interface.
The problem with scripts is that scripting is relatively complicated and unless the vendor supplies a script, few people have the expertise to write new scripts. This is problem is partially ameliorated in LookOUT by using Microsoft Visual Basic Script rather than a proprietary scripting language. Because Visual Basic is a very widely used programming language, it is thought that a reasonably competent programmer can develop new scripts. As a final point, a number of blind people are employed in 'call sites' where they interact with customers via the telephone and a computer system using a screen reader. The software used by call sites can be complex and require an operator to navigate a large number of complex screens.