Returns the handle of the first filter on the specified column or `axis' name. This searches only filters on single columns.
subroutine get1stFilterThisAxis(dssComp, axisName, firstFilter, status)
type(DScompT), intent(in) :: dssComp
character(*), intent(in) :: axisName
type(DSfilterT), intent(out) :: firstFilter
integer, intent(out) :: status
end subroutine get1stFilterThisAxis