TitleClarify --no-tcp option: Even when it is named tcp, do we mean data sources in general?

The description in cmk --help says: --no-tcp For -I: Only use cache files. Skip hosts without cache files. Clarify: a) Is it really only relevant for -I? b) These days Check_MK can use a lot of data sources to get monitoring data. Doesn't this option mean "don't really contact target system, use caches"? In this case we need to handle this in a general way (, not only in the TCPDataSource(). If it's a more generic option. Rename the option and accept the existing one as alias.