`command.com` is owned by 3M now to advertise its Command line of removable adhesive strips. URL prefixes were supposed to resolve this ambiguity (file:// vs.

`command.com` is owned by 3M now to advertise its Command line of removable adhesive strips. URL prefixes were supposed to resolve this ambiguity (file:// vs. http[s]://), but I guess people got tired of saying "aych-tee-tee-pee-colon-slash-slash..." :-)