Decoration can be easily inserted in ABC notation using a set of characters.
Here’s a list of the most common decorations:
~ a roll, used mainly in Irish and Scottish music. . *staccato* mark. H *fermata* mark. L accent or emphais. M lowermordent P uppermordent
Other decorations use the
! syntax, which is more explicit:
!trill! !slide! !arpeggio! !mordent!
Here’s a simple sequence with some decoration thrown in:
X: 1 C D !trill!E2 | !mordent!D E F G | ~G3
For a full list of all available decorations, visit the official ABC notation reference website