where is debuglevel documented ?

To: openldap-technical@openldap.org
Subject: where is debuglevel documented ?
From: danielle lampert <danielle55.lampert@gmail.com>
Date: Sun, 21 Jul 2019 17:27:53 +0200
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hello

-d debuglevel
 Set  the LDAP debugging level to debuglevel.

Where can I find the debuglevel values and their meaning ?

best regards

D.L.

Follow-Ups:
- Re: where is debuglevel documented ?
  - From: Dieter Klünter <dieter@dkluenter.de>
- Re: where is debuglevel documented ?
  - From: "A. Schulze" <sca@andreasschulze.de>