1. Clean up tmp/:
	publican clean

2. Comment out all xrefs in the book:
	To comment: s/<xref linkend="([^"]*)" />/<!-- L10N <xref linkend="$1" /> -->/
	To uncomment: s/<!-- L10N <xref linkend="([^"]*)" /> -->/<xref linkend="$1" />/

3. Checkout en-US/Installation_Guide.xml:
	git checkout -- en-US/Installation_Guide.xml

4. Comment out everything that isn't complete using <!-- L10N -->

5. Run publican print_unused and copy the output into a file in the book's root named "unused"; remove all spaces

6. Remove all unused files:
	for files in $(cat unused); do git rm -f en-US/$files; done

7. Make sure it builds

8. ???

9. PROFIT!