add docs

docs/doc.lol

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+\contentsline {lstlisting}{\numberline {B.1}Case Sensitivity on Identifiers}{12}{lstlisting.B.1}
+\contentsline {lstlisting}{\numberline {B.2}Keywords}{13}{lstlisting.B.2}
+\contentsline {lstlisting}{\numberline {B.3}Identifier Examples}{13}{lstlisting.B.3}
+\contentsline {lstlisting}{\numberline {C.1}hsmc.l (lex source)}{16}{lstlisting.C.1}
+\contentsline {lstlisting}{\numberline {C.2}hsmc.y (yacc source)}{18}{lstlisting.C.2}