$ xstructural markdown \
  --sourceFile com.io7m.xstructural.documentation/target/documentation/main.xml \
  --outputDirectory out
xstructural: XSValidator: INFO: validate (xstructural) /home/user/xstructural/com.io7m.xstructural.documentation/target/documentation/main.xml
xstructural: XSTransformer: INFO: document uses namespace urn:com.io7m.structural:9:0
...
$ ls -alF out/
total 608
drwxr-xr-x    2 xs xs    106 Oct  7 20:55 ./
drwxr-xr-x   15 xs xs   4096 Oct  7 20:55 ../
-rw-r--r--    1 xs xs      0 Oct  7 20:55 extra.xml
-rw-r--r--    1 xs xs 203008 Oct  7 20:55 index.md
-rw-r--r--    1 xs xs      0 Oct  7 20:55 markdown-resources.txt
-rw-r--r--    1 xs xs    851 Oct  7 20:55 messages.log
-rw-r--r--    1 xs xs 406649 Oct  7 20:55 trace.xml
