Working insertion of hash values; added a few labels in spec

docs/language/dart.sty

 \def\keyword#1{\textbf{#1}}
 \def\builtinId#1{\textbf{#1}}
 \def\comment#1{\textit{#1}}
 \def\capt#1{\rmfamily \caption{#1}}
 \newcommand{\cd}[1]{\textsf{#1}}
 \def\lt{$<$}
 \def\gt{$>$}
 \def\<{$\langle$}
 \def\>{$\rangle$}
 
@@ skipping 100 matching lines @@
 
   \sffamily
 }{
   %\end{verbatim}
 }
 
 
 % ----------------------------------------------------------------------
 % Support for hash valued Location Markers
 
-% very small font, to enable 33 char hash values in the margin
+% very small font, to enable 40 char hash values in the margin
 \makeatletter
 \ifcase \@ptsize \relax% 10pt
   \newcommand{\miniscule}{\@setfontsize\miniscule{2}{3}}% \tiny: 5/6
 \or% 11pt
   \newcommand{\miniscule}{\@setfontsize\miniscule{3}{4}}% \tiny: 6/7
 \or% 12pt
   \newcommand{\miniscule}{\@setfontsize\miniscule{3}{4}}% \tiny: 6/7
 \fi
 \makeatother
 
 % white: location markers should not create visual noise
 \definecolor{LMdim}{gray}{1.0}
 
 % insert location marker showing hash value of following paragraph
 \newcommand{\LMHash}[1]{%
   \hspace{0pt}\marginpar{\raisebox{0.5ex}{\miniscule{\color{LMdim}#1}}}}
 
 % support convenient renewcommand
 \let\OriginalLMHash\LMHash
 
 % define a label, and show the associated logical location marker
 \newcommand{\LMLabel}[1]{%
-  \vspace{-\baselineskip}\hspace{0pt}\OriginalLMHash{\raisebox{10ex}{sec:#1}}%
+  \vspace{-\baselineskip}\hspace{0pt}\OriginalLMHash{\raisebox{10ex}{#1}}%
   \label{#1}}
-
-% dummy version of LMHash, always shows the same arbitrary hash value
-\renewcommand{\LMHash}[1]{\OriginalLMHash{ba01b04d58c8c4e259764498f823cc65}}
-
 % ----------------------------------------------------------------------