StandOffManager (som)
The StandOffManager (som) can be used to convert from xml to standoff (and back), pluss merging, filtering, clipping etc. in so-format:
http://www.idi.ntnu.no/~satre/akane/
The tools-folder in brat also has several ...2standoff.py scripts:
http://endors.no/brat/tools/
The brat raw-data can be viewed here:
http://endors.no/brat/data/
Or nicely colored here:
http://endors.no/brat/
so-format (som)
fra<t>til<t>tag<t>attributter
ann-format (brat)
id<t>tag<t>fra<t>til<t>teksten