G'day everyone

Many years ago, when I was using an earlier version of Excel (Now currently
using 2007), I came across an add-in program that had several handy shortcut
functions.

One of which inserted Constants into a formula.

For the life of me, I can't remember the name, or for that matter where I
got it from, I lost it when I had one of my many system meltdowns.

appreciate any assistance
TIA
Mark.