I am running the latest OpenBSD and I cannot figure out how to set a simple alias, something along the lines of cls=clear. I've tried putting it in ~/.cshrc and in ~/.profile. I've tried:

alias cls clear
alias cls=clear
alias cls='clear'
alias cls="clear"

Nothing works.

On another but perhaps related note: If echo $SHELL tells me I'm using /bin/ksh, why a ~/.cshrc instead of ~/.kshrc?