HP 50g manual Using function Purge in the stack in RPN mode

You can use the PURGE command to erase more than one variable by placing their names in a list in the argument of PURGE. For example, if now we wanted to purge variables R and Q, simultaneously, we can try the following exercise. Press :

I@PURGE@ „ä³J@@@R!@@ ™‚í³J@@@Q!@@

At this point, the screen will show the following command ready to be executed:

To finish deleting the variables, press `. The screen will now show the remaining variables:

Using function PURGE in the stack in RPN mode

Assuming that our variable list contains the variables p1, z1, Q, R, and α. We will use command PURGE to delete variable p1. Press ³@@p1@@ ` I@PURGE@. The screen will now show variable p1 removed:

To delete two variables simultaneously, say variables R and Q, first create a list (in RPN mode, the elements of the list need not be separated by commas as in Algebraic mode):

J„ä³@@@R!@@ ™³@@@Q!@@ `

Then, press I@PURGE@ use to purge the variables.

Additional information on variable manipulation is available in Chapter 2 of the calculator’s user’s guide.

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