I have looked at the following question:
How to comment out a block of Python code in Vim
But that does not seem to work for me. How do I comment code easily wit
There's always #ifdef CHECK_THIS_LATER ... #endif which has the advantage of not causing problems with nested C-style comments (if you use them) and is easy to find and either uncomment or remove completely later.
#ifdef CHECK_THIS_LATER
#endif