The input document can use Skribilo's markup language to provide information
about the document's structure, which is similar to HTML or LaTeX and does not
-require expertise. Alternatively, it can use a simpler, “markup-less” format
+require expertise. Alternatively, it can use a simpler, “markup-less” format
that borrows from Emacs' outline mode and from other conventions used in
emails, Usenet and text.