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Print the number at the top of the stack, and decrement stack pointer by one. The sequence ``DUP .'' can be inserted anywhere into COD functions to print the number at the top of the stack. This may help you figure out what the function is doing.

Example:

 1.0 2.0 3.0 4.0 5.0
COD> .
 5.0
 1.0 2.0 3.0 4.0

Web Page Maintained by: Dr. Lawrence E. Brown elwin@redshift.gsfc.nasa.gov