frequency Hierarchy

System: HEP

flowchart LR
    hep_frequency["<b><a href="../../systems/hep/#frequency" style="color: var(--md-mermaid-label-fg-color); text-decoration: none;">hep::frequency</a></b><br><i>(inverse(<a href="../../systems/hep/#duration" style="color: var(--md-mermaid-label-fg-color); text-decoration: none;">duration</a>))</i>"]