This Avalon xml code looks very similar to a programm from me i use it to build GUI's for maschines.
Here a xml snippet for a Button:
<PICTUREBUTTON>
<SeitenID>Auto</SeitenID>
<UnterSeiteID/>
<BackgroundImage>CFTerminal.Bilder.DeckelZuGedreht.gif</BackgroundImage>
<XLocation>100</XLocation>
<YLocation>380</YLocation>
<XSize>75</XSize>
<YSize>34</YSize>
<WordPos>1</WordPos>
<BitMask>512</BitMask>
<ToggelButton>false</ToggelButton>
<LEDAnzeigen>false</LEDAnzeigen>
<LEDBytePos>0</LEDBytePos>
<LEDBitMask>0</LEDBitMask>
<DisableByte>1</DisableByte>
<DisableBitMask>0</DisableBitMask>
</PICTUREBUTTON>