Excel search for cell references in formulas

Question

I inherited a big model and have been trying to reverse engineer some of the formulas. There are a lot of fields. I am not sure if everyone of them is necessary.

Is it

Answer 1

Tools > Formula Auditing > Trace Precedents or Trace Dependents (Excel 2003)

Formulas > Trace Precedents or Trace Dependent (Excel 2010)