Programming 18-9
Delete a 
program
To delete a program:
1. Press  PROGRM to open the Program catalog.
2. Highlight a program to delete, then press  .
Delete all 
programs
You can delete all programs at once.
1. In the Program catalog, press   CLEAR.
2. Press . 
Delete the 
contents of a 
program
You can clear the contents of a program without deleting 
the program name.
1. Press 
PROGRM to open the Program catalog.
2. Highlight a program, then press  .
3. Press 
CLEAR, then press  .
4. The contents of the program are deleted, but the 
program name remains. 
Customizing an aplet
You can customize an aplet and develop a set of 
programs to work with the aplet.
Use the SETVIEWS command to create a custom VIEWS 
menu which links specially written programs to the new 
aplet. 
A useful method for customizing an aplet is illustrated 
below:
1. Decide on the built-in aplet that you want to 
customize. For example you could customize the 
Function aplet or the Statistics aplet. The customized 
aplet inherits all the properties of the built-in aplet. 
Save the customized aplet with a unique name.
2. Customize the new aplet if you need to, for example 
by presetting axes or angle measures.
3. Develop the programs to work with your customized 
aplet. When you develop the aplet’s programs, use 
the standard aplet naming convention. This allows 
you to keep track of the programs in the Program 
catalog that belong to each aplet. See “Aplet naming 
convention” on page 18-10.
HP 39gs English.book  Page 9  Wednesday, December 7, 2005  11:24 PM