HP 50g User Manual page 63

If we de-select the UNITS option (press @UNITS ) only the values are shown
(English units selected in this case):
To copy the value of Vm to the stack, select the variable name, and press
@²STK, then, press @QUIT@. For the calculator set to the ALG, the screen will
look like this:
The display shows what is called a tagged value, Vm:359.0394. In
here, Vm, is the tag of this result. Any arithmetic operation with this
number will ignore the tag. Try, for example:
‚¹2*„î`
which produces:
The same operation in RPN mode will require the following keystrokes
(after the value of Vm was extracted from the constants library):
2`*‚¹
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