This class parses a formula string into a List of tokens in RPN order.
Inspired by
Lets Build a Compiler, by Jack Crenshaw
BNF for the formula expression is :
::= []*
::= [ ]*
::= | () | | ::= ([expression [, expression]*])
author: Avik Sengupta author: Andrew C.
Low level model implementation of a Sheet (one workbook contains many sheets)
This file contains the low level binary records starting at the sheets BOF and
ending with the sheets EOF.