Expression first
The page highlights formula-expression change detection as the main outcome.
Formula diff
Compare Excel formulas between files
This page exists for the narrower task where the reviewer cares about formula-expression edits. WorkbookDiff separates formula changes from ordinary values, so a revised calculation does not disappear into a generic cell diff.
Why a separate page matters
People searching formulas usually want the expression change, not the whole workbook story
Less noise
That makes it easier for searchers to see whether WorkbookDiff fits their exact review job.
Same real limits
The page still stays honest about `.xlsx` support and unsupported workbook features.
Useful next step
From here, the user can move back to the full tool or to the CSV export page.
This is not a formula authoring assistant and not a recalculation engine. It is a comparison page for checking what changed between two workbook versions.