2021-03-06: rewrite of the CMK 1.6 shell based version
2021-03-07: added upper/lower levels for active/profiler/posture sessions
            added metrics/graph/perfometer
2022-11-30: WATO: fixed CheckParameterRulespecWithoutItem (from CheckParameterRulespecWithItem)             
2023-11-26: fixed upper levels (THX to marcus[dot]klein[at]iteratio[dot]com)