When I code in C I prefer to use // instead of /* ... */ to comment out code.
In othee IDEs I have used you can select a block of text and the go Edit > comment and it will add "//" before each line. (...usually there is an "uncomment" button too).
This means when I look at my code I can instantly see which lines are commented out rather than searching for the beginning "/*" to determine it.
I don't see this as a critical feature but as a suggestion that would be a nice option for those people who want to use it.