Abm
    Noabm

    Causes the reconstruction of the logical area bit map (ABM)
    pages for areas specified with the Areas qualifier. After-image
    journaling is disabled when you specify the Abm qualifier. You
    must explicitly enable after-image journaling after the RMU
    Repair command completes if you want journaling enabled.

    The NoAbm qualifier specifies that ABM pages are not to be
    reconstructed; this is the default.