more efficient Markup_Tree, based on branches sorted by quasi-order;
renamed markup_node.scala to markup_tree.scala and classes/objects accordingly;
Position.Range: produce actual Text.Range;
Symbol.Index.decode: convert 1-based Isabelle offsets here;
added static Command.range;
simplified Command.markup;
Document_Model.token_marker: flatten markup at most once;
tuned;
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\begin{table}[htbp]
\begin{center}
\begin{tabular}{lll}
Constant & Type & Syntax \\
\hline
\isa{{\isadigit{0}}} & \isa{{\isacharprime}a{\isasymColon}zero} \\
\isa{{\isadigit{1}}} & \isa{{\isacharprime}a{\isasymColon}one} \\
\isa{plus} & \isa{{\isacharprime}a{\isasymColon}plus\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}plus\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}plus} & (infixl $+$ 65) \\
\isa{minus} & \isa{{\isacharprime}a{\isasymColon}minus\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}minus\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}minus} & (infixl $-$ 65) \\
\isa{uminus} & \isa{{\isacharprime}a{\isasymColon}uminus\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}uminus} & $- x$ \\
\isa{times} & \isa{{\isacharprime}a{\isasymColon}times\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}times\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}times} & (infixl $*$ 70) \\
\isa{divide} & \isa{{\isacharprime}a{\isasymColon}inverse\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}inverse\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}inverse} & (infixl $/$ 70) \\
\isa{Divides{\isachardot}div} & \isa{{\isacharprime}a{\isasymColon}div\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}div\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}div} & (infixl $div$ 70) \\
\isa{Divides{\isachardot}mod} & \isa{{\isacharprime}a{\isasymColon}div\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}div\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}div} & (infixl $mod$ 70) \\
\isa{abs} & \isa{{\isacharprime}a{\isasymColon}abs\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}abs} & ${\mid} x {\mid}$ \\
\isa{sgn} & \isa{{\isacharprime}a{\isasymColon}sgn\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}sgn} \\
\isa{less{\isacharunderscore}eq} & \isa{{\isacharprime}a{\isasymColon}ord\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}ord\ {\isasymRightarrow}\ bool} & (infixl $\le$ 50) \\
\isa{less} & \isa{{\isacharprime}a{\isasymColon}ord\ {\isasymRightarrow}\ {\isacharprime}a{\isasymColon}ord\ {\isasymRightarrow}\ bool} & (infixl $<$ 50) \\
\isa{top} & \isa{{\isacharprime}a{\isasymColon}top} \\
\isa{bot} & \isa{{\isacharprime}a{\isasymColon}bot}
\end{tabular}
\caption{Important Overloaded Constants in Main}
\label{tab:overloading}
\end{center}
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