AX - at least that is what Speech-Language Pathologists use.
The shorthand for hope is "HP."
"Ptf." is the shorthand for plaintiff.
The shorthand for schedule is "sched."
the shorthand for a angry face :@
The shorthand symbol for transfer is "→".
Q&A is already shorthand for "question and answer."
the shorthand for a crying face :'( Also, ='[ and ='( and :'[
The only shorthand symbol I can think of for 'of' is o/.
The shorthand symbol for 'different' is ≠ (not equal to).
"E" in shorthand typically represents the word "and."
The triangle in shorthand means "therefore"
Duployan shorthand was created in 1868.