Hi. Reading at mult-aux.mkxl, I've seen command handlers define, among
others,  \installparameterhashhandler, However, in files such as those
related with symbol management, only \installparameterhandler and
\installsetuphandler are. When writing basic modules, sometimes only the
"raw" macros above are actually needed. So, what are "parameterset",
"hashhander", "rootparameterhandler", etc. for? Where would they ease
module writing? Thank you a lot and sorry for the long question.

Best regards,

Jairo