Any text regions matched by items in this list will never trigger a Highlight (or, for the Ignore Blacklist, will never cause a message to be ignored).

For example if the Highlight list contains kerbo, it would highlight the message "Welcome :) kerboHowdy", however if kerboHowdy was blacklisted it would prevent that Highlight. If instead Welcome was blacklisted, it would not prevent that Highlight.

Blacklist entries having only non-main text matches such as +start:!clip or non-text matches such as cat:vip will prevent matches on the entire text region, so +text:Welcome would prevent the above match.

Adding the config:block prefix will prevent Highlights altogether, if the blacklist entry matches. For example if config:block Welcome was blacklisted, it would prevent all Highlights of messages that contain "Welcome", even non-text matches.