HP 49g Graphing Calculator - Manual (Page 231)

Manipulating stack data
The HP 49G provides functions to manipulate the stack levels. To access
these functions, you enter interactive stack mode.
® To enter interactive stack mode, press ®.
The interactive stack commands appear on the function key menu.
a. Use the arrow keys to navigate up and down the stack to select the
stack level that you want.
b. Use the frmction keys to select the command that you want to apply
to the current stack level.
® To exit interactive stack mode and return to normal stack operations:
® press (ENTER) to apply the interactive stack command that you
selected, or
® press (CMS) to cancel the command.
When you enter interactive stack mode, data on the stack is displayed in
text mode. For example, any equations on the stack are displayed in text
mode rather than textbook mode.
Interactive stack commands
Command Function
^LIST
Creates a list that contains the stack objects from 1 to
the current level. The newly created list is placed on
level 1 of the stack, and the original objects are
removed.
DROPN
Deletes all levels below the selected level.
DUPN
Duplicates the levels from the currently selected level
to level 1, and pushes up the existing levels to accom­
modate the duplicated levels.
BTCHO
Press
ECHO,
then (ENTER) to copy the contents of the cur­
rent level to the command line. Edit the contents on the
command line, and press (ENTER) to place them on level 1
of the stack.
Working in RPN mode Page E-7