Clarify array of records (#3715)

* Clarify
* Update chapters/functions.tex
Co-authored-by: Henrik Tidefelt <[email protected]>

Author: HansOlsson

chapters/functions.tex

@@ -2057,10 +2057,11 @@ \subsubsection{Records}\label{records}
 \item
   The components of the Modelica record class are declared in the same order in the C struct.
 \item
-  Arrays cannot be mapped.
+  Records containing arrays cannot be mapped.
 \end{itemize}
 
-Records are passed by reference (i.e., a pointer to the record is being passed).
+Scalar records are passed by reference (i.e., a pointer to the record is being passed).
+As stated in \cref{arrays-1}, an array of records is passed as a pointer to the first element in an array of structs (array-to-pointer decay in C).
 
 \begin{example}
 \begin{lstlisting}[language=modelica]