Parses RSel-specific expression text and rebuilds it in the UI.
As of
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/17641/111507/rsel-exprparser-basic.js
Programmatic-end for parsing RSel expression text and rebuilding the expression in the user interface.
