This file is indexed.

/usr/share/ircd-hybrid/help/invite is in ircd-hybrid 1:8.2.12+dfsg.1-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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INVITE <nickname> <channel>

INVITE sends a notice to the user that you have
asked him/her to come to the specified channel.