+.SH Caveats
+As previously stated, this backend should not be considered
+a replacement of other data storage backends, but rather a gateway
+to existing RDBMS storages that need to be published in LDAP form.
+.LP
+The hasSubordintes operational attribute is honored by back-sql
+in search results and in compare operations; it is partially honored
+also in filtering. Owing to design limitations, a (braindead) filter
+of the form
+\fB(!(hasSubordinates=TRUE))\fP
+will give no results instead of returning all the leaf entries.
+If you need to find all the leaf entries, please use
+\fB(hasSubordinates=FALSE)\fP
+instead.
+.LP