layout { margin { horizontal 6; vertical 8; }; }; row { grid 3 { indicator "ind_power_on" { style "green"; }; indicator "ind_power_off" { style "red"; }; indicator "ind_halt"; button "btn_power_on" { text "On"; style "green"; }; button "btn_power_off" { text "Off"; style "red"; }; constraint COPY_WIDTH "btn_power_on"; button "btn_halt" { text "Halt"; }; constraint COPY_WIDTH "btn_power_on"; }; label "lbl_status" { style "digital"; }; expand; };