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doc/spec/03.02.compilation_units.tex
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\end{figure}
\section{Compilation Units}
\label{sec:compilation_units}
Compilation unit is a minimal structure recognized by a parser. An application can contain multiple units, compiled separatedly.
In order to use other units they have to be imported. In particular, the standard library is comprized of a number of precompiled units,
which can be imported by an end-user application.
The concrete syntax for compilation unit is show on Fig.~\ref{compilation_unit}. Besides optional imports a unit must contain
The concrete syntax for compilation unit is shown on Fig.~\ref{compilation_unit}. Besides optional imports a unit must contain
a \nonterm{scopeExpression}, which may contain some definitions and computations. Note, a unit can not be empty. The computations described in
a unit are performed at unit initialization time (see~\ref{separate_compilation}).