When editing a formula, if you click the drop down/pivot double area have the formula display with indents for if-then-else statements, row numbers, and coloring (if possible allow adding in comments).
Making clear what is a key word, what is a module, line item, when/where brackets/parenthesis begin and end, and auto-fill when you start typing out names of each piece (eg. I start typing Time, with a T and all the module names, lists, and key words start to populate as a list below that is click able)
The content in this article has not been evaluated for all Anaplan implementations and may not be recommended for your specific situation.
Please consult your internal administrators prior to applying any of the ideas or steps in this article.