$ xmlwf crate.xrf 
crate.xrf:3:0: junk after document element

$ cat crate.xrf 
<?xml version="1.0"?>
<HEADER MAGIC="XRF" VERSION="910"/>
<MATERIAL NUMMAPS="1">
  <AMBIENT>255 255 255 255</AMBIENT>
  <DIFFUSE>255 255 255 255</DIFFUSE>
  <SPECULAR>255 255 255 255</SPECULAR>
  <SHININESS>1.0</SHININESS>
  <MAP>//tests/sdl_gl_box/data/crate.png</MAP>
</MATERIAL>