I was patrolling the options in localOverrides and when I reached these:

# This sets if mathview is available on the PG editor for use as a minimal latex equation editor

#$options{PGMathView} = 1;

# This sets if WirisEditor is available on the PG editor for use as a minimal latex equation editor

#$options{PGWirisEditor}= 1;

# This sets if MathQuill is available on the PG editor for use as a minimal latex equation editor

#$options{PGMathQuill}= 1;

I'm not seeing any effect when I enable any of them and visit the editor. What should I be looking for? Do these features still work in 2.17?