How to use cgrep?

[Schizo]

csearch, cindex is clear, but how does cgrep work, do I combine it with

csearch "text" | cgrep "cpp"

why not

csearch "text" | grep "cpp" 

which seams to be faster or i didn't get cgreps full power.

[Russ Cox]

You can use cgrep anywhere you'd use grep. It just provides a different regexp syntax, more like pcregrep.