htmlFor
1.tag property SCRIPT:

1. specifies in the tag the object for which the event handler is created.
   for = object_id
2. sets (modifies) in the script the object for which the event handler is created.
   htmlFor = "object_id"

2. property of the tag LABEL , sets, returns the name (value of the NAME attribute) of the INPUT tag, which the LABEL tag (label or heading) is intended for.
for = "name"