<Z>
When sounds within or at the end of a lexical unit are lengthened, we use
<Z> (with Z standing for the German word 'Zögerung').
You can find it for prefinal lenghtening, with plosives that have a longer
closure phase and in the event of an aspiration phase that is stronger or
longer than normally. This label is directly added to the letter representing
the sound affected.
w001_ptd_001_AAA: wann f"angt der Fi<Z>lm de<Z>nn an ?
w001_ptd_001_AAA: f"ur welche Uhrzeit<Z> gilt<Z> das ?