Signed-off-by: Karel Zak <kzak@redhat.com>
Do not use multi-line text in columns.
*-T*, *--tree* _rel_::
-Use list output format.
+Use tree-like output format.
If *process* is given as _rel_, print proecss tree(s) in each name space. This is default when *--tree* is not specified.
If *parent* is given, print tree(s) constructed by the parent/child relationship.
If *owner* is given, print tree(s) constructed by the owner/owned relationship.