This label can be used if it is impossible to understand a part of what has been said within the man-machine-dialogue. Words that are not identifiable can either be completely incomprehensible or may be partially understood but not with certainty. For this reason we use the label <%> instead of a word we can't identify at all and another but quite similar label % if we can understand a word partially but not well enough to identify it without any doubt.
w001_ptd_001_AAA: heute will ich <%> sehen .
w001_ptd_001_AAA: heute abend% will ich einen Film sehen .