I tried this on knowledegroot 0.9.6.c and 0.9.7.rc3.
MySQL 4.1.12
PHP 4.3.9-3.9
The situation I describde earlier is true for any root or page. It only appear in the tree if it has at least read rights for otherrights.
You can check this in my test site:
http://bateria.dsi.uminho.pt/man user:admin pass:admin
My dumps:
mysql> select * from tree;
+----+------------+--------------------------+-------+-------+------------+-------------+-------------+---------+
| id | belongs_to | title | owner | group | userrights | grouprights | otherrights | deleted |
+----+------------+--------------------------+-------+-------+------------+-------------+-------------+---------+
| 1 | 0 | DSI | 1 | 2 | 2 | 1 | 0 | 1 |
| 2 | 1 | Servicos Administrativos | 1 | 2 | 2 | 1 | 0 | 1 |
| 3 | 1 | Servicos de Informatica | 1 | 2 | 2 | 1 | 0 | 1 |
| 4 | 0 | SA | 1 | 4 | 2 | 1 | 1 | 0 |
| 5 | 0 | Publico | 4 | 2 | 1 | 1 | 0 | 1 |
| 6 | 1 | MJLT | 4 | 4 | 2 | 1 | 0 | 1 |
| 7 | 0 | MJTL | 4 | 4 | 2 | 1 | 0 | 1 |
| 8 | 0 | MJLT2 | 1 | 4 | 1 | 2 | 0 | 1 |
| 9 | 0 | SI | 1 | 5 | 2 | 1 | 0 | 0 |
| 10 | 4 | Missao | 1 | 2 | 2 | 2 | 0 | 0 |
+----+------------+--------------------------+-------+-------+------------+-------------+-------------+---------+
mysql> select * from user_group;
+----+--------+---------+
| id | userid | groupid |
+----+--------+---------+
| 12 | 4 | 4 |
| 25 | 6 | 4 |
| 6 | 3 | 2 |
| 11 | 4 | 2 |
| 17 | 5 | 5 |
| 16 | 5 | 2 |
| 24 | 6 | 2 |
+----+--------+---------+
mysql> select * from users;
+----+---------+----------------------------------+-----------+----------+---------+--------------+---------------+-------+-----------+------------------------+---------+
| id | name | password | theme | language | enabled | defaultgroup | defaultrights | admin | rightedit | treecache | deleted |
+----+---------+----------------------------------+-----------+----------+---------+--------------+---------------+-------+-----------+------------------------+---------+
| 1 | admin | 21232f297a57a5a743894a0e4a801fc3 | wordpress | en | 1 | 1 | 210 | 1 | 1 | a:2:{i:1;i:1;i:4;i:1;} | 0 |
| 3 | jorgef | 60e655024aa16f5a96d401b1f31cf04f | wordpress | | 1 | 1 | 221 | 1 | 1 | | 0 |
| 4 | mjlt | c12e01f2a13ff5587e1e9e4aedb8242d | wordpress | | 1 | 4 | 111 | 0 | 0 | a:1:{i:4;i:1;} | 0 |
| 5 | rvs | ac5585d98646d255299c359140537783 | wordpress | | 1 | 5 | 111 | 0 | 0 | a:1:{i:1;i:0;} | 0 |
| 6 | manuela | c12e01f2a13ff5587e1e9e4aedb8242d | wordpress | | 1 | 4 | 211 | 0 | 0 | a:1:{i:4;i:1;} | 0 |
+----+---------+----------------------------------+-----------+----------+---------+--------------+---------------+-------+-----------+------------------------+---------+
