For trombone sheet music :
it will be very appreciated to add short slide notation before or after the note without a link to another note or rest.
The short slide could be rise or fall.
suggested additional technique notation :
- Short slide before or after note with no link to a note or rest
- Upper and lower Mordent on note (short squiggle)
- Grupetto slide (as per short slide but both direction : rise and fall or fall and rise)