VIM text folding .

1. What is text folding and why shall I use it. Folding means to hide blocks of code. It is easy to compare some time parts of the code by hiding block of text, which appears in between, using VIM manual folding.


2. First folding has to be enabled:
   :se fdm
   
   Second fold text by number of lines down to current position by the command:
   zf3j
   
   Or put a marker a and then issue:
   zf'a
   
   To delete:
   zd