Compared to TAWK, I miss one thing most: fseek and ftell.

I need it often because I have to deal with very big files.
With TAWK, I can create hashes with the line numbers as key
and the ftell value of the start of this line as value and
then jump easily later to this line saving memory and time.

Are there plans to implement it?
If it is already implemented, please correct me.