The primary function, wallace, calls two other subroutines (decoder and sublist). If you execute the worksheet you'll see three examples of calling the "wallace" subroutine with different parameter lists. The subroutines that do the work are listed first, and the sample calling sequences are at the end of the worksheet. Please note that "wallace" returns a *list* (even though the commas are somewhat difficult to see), and that the Least Significant Bit (LSB) of the result is on the *LEFT* of the list rather than on the right (the opposite of what you would normally expect). The Most Significant Bit (MSB) will be on the *RIGHT* in the returned list.