Power BI lets measure descriptions live beside DAX code

Measure definitions often outlive the person who created them, while their business meaning sits in a separate document or is never recorded. That leaves inherited reports full of calculations whose names look familiar but whose assumptions are unclear. Keeping the explanation beside the DAX reduces the gap between the calculation and the meaning people attach to it. It will not make a weak measure correct, but it gives reviewers and future maintainers a better place to spot denominators, exclusions and business rules.