Making the "=" a should in formula.

Because it would be handy to do the following:
Cell A1 and A2, in A2 there s a formula, the cell shows the result of
that formula.
In cell A1 I want to store how the formula looks.
I would need for this:
something to distinguish formula that are formula and formula that are
just strings that I want to show.

Another handy thing would be a FormulaToString(cell) function that
takes a cell as input and shows a string that is the textual
representation of the formula and not the value calculated by the
formula.