An implementation of the MID function:
Returns a specific number of characters from a text string,
starting at the position you specify, based on the number
of characters you specify.
This is a test of all the normal formula functions we have implemented.
It should pick up newly implemented functions which are correctly added
to the test formula excel file, but tweak the rows below if you
add any past the end of what's currently checked.
For newly implemented eval functions,
See Also:org.apache.poi.hssf.record.formula.eval.TestEverything author: Amol S.