Gracenotes
Gracenotes are:
short uncover-cover movements
played by uncovering only the corresponding note's hole in the chanter
e.g. a D gracenote is only played by raising your index finger.
above the melody line (notice in the below example, all gracenotes are above the Low-G)
not counted as part of a tune's time signature
All gracenotes (played from Low-G):
Gracenotes:
Finger movement timeline of a gracenote: