What is the Ousía Framework?

Express what you mean

One aspect of Ousía is its document markup language. It allows you to write the text of your document while attaching additonal information to the text using special commands.

Let's assume you wanted to write a book (e.g. The Adventures of Tom Sawyer by Samuel Langhorne Clemens alias Mark Twain). You could start writing it down like this:

                THE ADVENTURES OF TOM SAWYER
                             by
                         Mark Twain
                 (Samuel Langhorne Clemens)

PREFACE

Most of the adventures recorded in this book really occurred;
one or two were experiences of my own, the rest those of boys
who were schoolmates of mine. Huck Finn is drawn from life;
Tom Sawyer also, but not from an individual—he is a
combination of the characteristics of three boys whom I knew,
and therefore belongs to the composite order of architecture.

\import[ontology]{book} % We want to write a book
\import[ontology]{novel} % We want to do some novel writing

\begin{book}[lang=en]{The Adventures of Tom Sawyer}
	% Add some meta-information about the book at hand
	\begin{meta}
		\author[realname]{
			\name{
				\first{Samuel}
				\middle{Langhorne}
				\last{Clemens}
			}
			\name[alias]{
				\first{Mark}
				\last{Twain}
			}
		}
		\published{1876}
	\end{meta}

	% Define the characters that occur in the book -- we can
	% later reference them by their name ("hashtag")
	\begin{characters}
		\def#hf{
			\name{
				\first{Huckleberry}
				\first[short]{Huck}
				\last{Finn}
			}
		}
		\def#ts{
			\name{
				\first{Thomas}
				\first[short]{Tom}
				\last{Sawyer}
			}
		}
	\end{characters}

	% Start of the actual content -- we can annotate certain
	% parts of the document to reference one of the characters
	% defined above
	\begin{preface}
		Most of the adventures recorded in this book really
		occurred; one or two were experiences of my own, the
		rest those of boys who were schoolmates of mine.
		::{hf}Huck Finn:: is drawn from life; ::{ts}Tom
		Sawyer:: also, but not from an individual—he is a
		combination of the characteristics of three boys whom
		I knew, and therefore belongs to the composite order
		of architecture.
	\end{preface}
\end{book}