AMT Datasouth PAL - Manual (Page 64)

begin
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Line 2 places the procedure's empty dictionary onto the top of the dictionary stack. Lines 3 and 4
save the second and first parameters to the procedure under the variable names Second and First
within the procedure's dictionary. Line 5 recalls the two values using the variable names and then
performs the averaging equation. Line 6 discards the procedure's dictionary from the dictionary
stack. Since no secondary reference to this dictionary exists, this also discards the First and
Second variables from the printer's memory.