Word for "from this point of the document on it will be called simply XYZ"

Is there any word that could replace the phrase in bold below and retain the same meaning?

This document defines the intended behaviour for the AVI to XYZ conversion tool (which from this point of the document on will be called simply "conversion tool").

The usual wording, I believe, is "hereafter/henceforth referred to as".

This document defines the intended behaviour for the AVI to XYZ conversion tool (hereafter referred to as "Conversion Tool").

I've also seen it being dropped completely, as in:

This document defines the intended behaviour for the AVI to XYZ conversion tool ("Conversion Tool").

You could try "hereinafter Conversion Tool", although you may find it a little pretentious or legalistic.