inifile halui entries
**************************
[HALUI]
# add halui MDI commands here (max 64)
MDI_COMMAND = G10 L2 P1 X[#5221 + 1]
MDI_COMMAND = G10 L2 P1 X[#5221 - 1]
MDI_COMMAND = G10 L2 P1 Y[#5222 + 1]
MDI_COMMAND = G10 L2 P1 Y[#5222 - 1]
MDI_COMMAND = G10 L2 P1 Z[#5223 + 1]
MDI_COMMAND = G10 L2 P1 Z[#5223 - 1]
MDI_COMMAND = G54 G0 X0 Y0
MDI_COMMAND = G54 G0 Z0

.xml file contents
*************************
<?xml version='1.0' encoding='UTF-8'?>
<pyvcp>

    <labelframe text="Jog Offsets">
    <font>("Helvetica",16)</font>
    <hbox>
      <button>
      <halpin>"xplus"</halpin>
      <text>"X+"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"xminus"</halpin>
      <text>"X-"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"yplus"</halpin>
      <text>"Y+"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"yminus"</halpin>
      <text>"Y-"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"zplus"</halpin>
      <text>"Z+"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"zminus"</halpin>
      <text>"Z-"</text>
      <bd>3</bd>
      </button>
    </hbox>
    <hbox>
      <button>
      <halpin>"zero"</halpin>
      <text>"X0 Y0"</text>
      <bd>3</bd>
      </button>
      <button>
      <halpin>"zeroz"</halpin>
      <text>"Z0"</text>
      <bd>3</bd>
      </button>
 
    </hbox>
    </labelframe>
</pyvcp>

postgui.hal entries
**************************
net button-1 halui.mdi-command-00 <= pyvcp.xplus
net button-2 halui.mdi-command-01 <= pyvcp.xminus
net button-3 halui.mdi-command-02 <= pyvcp.yplus
net button-4 halui.mdi-command-03 <= pyvcp.yminus
net button-5 halui.mdi-command-04 <= pyvcp.zplus
net button-6 halui.mdi-command-05 <= pyvcp.zminus
net button-7 halui.mdi-command-06 <= pyvcp.zero
net button-8 halui.mdi-command-07 <= pyvcp.zeroz