Half flat
[File:half_flat.jpg|33x63px|half_flat.jpg]]
A half-flat is an accidental used to lower a note with approximately half of a semitone, and will be audible as such. In MusiCAD half flats are implemented as a special ornament and do not obey the rules for regular accidentals. Each note that is to be played half flattened should be marked as such.