{
"datadir": ["content_datadir"],
"content": [
  ["section", "Test of section"],
  ["sorted"],
  ["songsection", "Test of song section"],
  ["cwd(content_datadir/content)",
    "song.csg", "song.tsg",
    ["tex", "foo.tex"]
  ],
  ["include", "include.sbc"]
  ]
}