NoExtras
 
This is a collection of programs for the Psion that do
nothing at all. :o) However they do have the same
identification as some of the built-in programs and as
they take precedence they can prevent themselves from
appearing on the extras bar. 

To hide Bombs: 

• Copy the dummy files Bombs.app and Bombs.aif into the
  C:\System\Apps\Bombs folder. 
• Go into the Extras Bar setup in Control Panel and
  select 'Any Program' for the slot where Bombs appears. 
• Perform a soft reset. 

Bombs should now be gone from your Extras Bar. To put
it back there: 

• Rename the C:\System\Apps\Bombs folder to Bombs2.
• Delete Bombs.app and Bombs.aif from this folder. 
• Rename the 'Bombs2' folder back to 'Bombs'.

You can do similar with Comms and Program by putting their
dummy programs in the relevant folder. (Note that the files
and folder for Program are called 'TextEd')