[bytefield]
----
(defattrs :plain [:plain {:font-family "M+ 1p Fallback" :font-size 24}])
(def row-height 40 )
(def row-header-fn nil)
(def left-margin 30)
(def right-margin 30)
(def boxes-per-row 32)

(draw-box "MXLEN-1" {:span 16 :text-anchor "start" :borders {}})
(draw-box "0" {:span 16 :text-anchor "end" :borders {}})
(draw-box "mtinst" {:span 32})
(draw-box "MXLEN" {:span 32 :borders {}})
----