HP 48gII - Manual (Page 793)

Page B-12
Alpha-right-shift characters
The following sketch shows the characters associated with the different
calculator keys when the ALPHA
~ is combined with the right-shift key ….
" '
Alpha ~… functions of the calculator’s keyboard
Notice that the
~… combination is used mainly to enter a number of
special characters from into the calculator stack. The CLEAR, OFF, , ,
comma (,), key enters and OFF keys also work as their main function even