Understand makes it easy to know where to start looking to track down a bug, Find where to place breakpoints, and identify which locations in the code need to be updated.
Tracking down an issue with nested typedef structs in the Data Members graph using Understand.
The API for entities have both contents and values. Natasha explains the difference while fixing a bug.
Using unexplained numbers makes your code hard to understand, and difficult to adapt and extend. Static analysis tools like Understand can find them, but take care fixing them.
Humans didn’t stop needing special tools when they started editing code. Your time and brain are special – use the right tool for the job.