clarified docu
clarified docu

to address this question: https://groups.google.com/d/msg/elm-discuss/Yo0KXZPLK9o/LAwlwDZiVDQJ
vilterp/core,ThomasWeiser/core,suryagaddipati/core,martinos/core,laszlopandy/core,manleyjster/core,deadfoxygrandpa/core,krisajenkins/core,manleyjster/core,isaacsanders/core,isaacsanders/core,avh4/elm-lang-core,ThomasWeiser/core,rgrempel/core,bradurani/core,deadfoxygrandpa/core,avh4/elm-lang-core,krisajenkins/core,Dandandan/core,simonh1000/core,laszlopandy/core,suryagaddipati/core,rick68/core,rick68/core,eeue56/core,Dandandan/core,rgrempel/core,alexiamcdonald/elm-core,eeue56/core,alexiamcdonald/elm-core,colinmccabe/core,vilterp/core,colinmccabe/core,Pisys/core,martinos/core,Pisys/core,simonh1000/core,bradurani/core