Accepting Suggested Translations In XLIFF

When I generate XLIFF Files for translation, I may 
include 1 or more alt-trans elements containing suggested 
translations

 

Translators may use one of these suggestions, or 
they may translate from scratch

 

Typically, a Translation Tool will present all 
available alt-trans elements with their parent trans-unit, allowing translators 
to select and optionally modify one of these suggestions

 

I am looking for some mechanism to mark an 
alt-trans element to indicate that a translation tool has accepted the alt-trans 
as the required translation.

 

A post processing tool can identify an accepted 
suggestion, and compare the target with the alt-trans to see if further 
modifications have been made to the target after accepting the 
suggestion

 

There seem to be several possible ways to do this 

1) By preference, I would like to add a new 
attribute to alt-trans, to indicate that the alt-trans has been 
accepted

 

2) Or I could use a note element

 

3) I could also use context group, if there 
was a relevant allowed value within context-type

 

4) I could also use tool etc, but this will not be 
standard

 

If we agree that this is something that other users 
may require, can we pick a method and include it in the recommendations 
list

 

Mat