[carabiner]

I'm surprised it's 2022 and they haven't embraced a multiline equation editor.

[DavidPeiffer]

Not sure when it became a feature, but since at least 5 years ago you can click and drag the equation edit bar down to reveal multiple lines for editing.

Pair this with Alt+Enter (line break) and adding 4 spaces at the start and you can nest functions in a familiar, albeit manual, way.

[layer8]

The resizable formula bar was introduced in Excel 2007: http://projectwoman.com/tag/formula-bar-resizing

[Valgrim]

There is a microsoft garage project that helps you do it that way:

https://www.microsoft.com/en-us/garage/profiles/advanced-for...