StandOffManager (som)
The StandOffManager (som) can be used to convert from xml to standoff (and back), pluss merging, filtering, clipping etc. in so-format:
...
Or nicely colored here:
so-format (som)
fra<t>til<t>tag<t>attributter
ann-format (brat)
id<t>tag<t>fra<t>til<t>teksten