S/R Barry, extended by PeterO

Simple script showing S/R lines.

I have extended this script

What have I added precisely? I extended S/R lines. Now there are 2 most recent support lines and 2 most recent resistance lines visible on the chart at all times.
Original S/R Barry script showed only 1 support and 1 resistance lines at a time. So it was showing where the price reversed, but didn't provide value in "retest" situation. Extended version is aimed at working with these "retests".

Enjoy!