This operator is active on the IRC channel and may frequent it daily or every few days.
This operator is somewhat active on the channel, but generally joins a few times a week. Their activity can be variable.
This operator has declared themselves to be absent from the channel. Absent operators may still join the channel, but will often not do so for weeks at a time. Long-time absent operators are eventually tagged as 'inactive.'
This operator has not joined the IRC channel for an extended period of time. Inactive operators will not be around to answer queries on the channel until they return to regular activity.