HP 48gII - Manual (Page 819)

Page F-4
This operation is equivalent to the keystroke sequence ‚O. The equation
writer is introduced in detail in Chapter 2. Examples that use the equation
writer are available throughout this guide.
File manager..
Selecting option 7.File manager.. in the APPS menu launches the file manager
application:
This operation is equivalent to the keystroke sequence
„¡.The file
manager is introduced in Chapter 2.
Matrix Writer..
Selecting option 8.Matrix Writer.. in the APPS menu launches the matrix
writer:
This operation is equivalent to the keystroke sequence
„².The Matrix
Writer is presented in detail in Chapter 10.