This is a permitting proxy rule, but traffic, matching this rule will not be processed by any other rules after that. It means that, for example, if you make a skipping proxy rule for a domain, this domain will not be checked by content-filter.
Comment. In adding a proxy-server rule it is possible to use a construct like - <.domain>, this construct means only sub-domains. For example, .google.com in proxy deny rule will open access to google.com, but denied it to mail.google.com, drive.google.com and etc.