in the generated quantities, in declaration order.</p>
<p>Stan provides three types of container objects: arrays, vectors, and matrices.
In order to output all elements of a container object, it is necessary to choose
an indexing notation and a serialization order.
The Stan CSV file indexing notation is</p>
<ul>
<li>The column name consists of the variable name followed by the element indices.</li>
<li>Indices are delimited by periods (‘.’).</li>
<li>Indexing is 1-based, i.e., given a dimension of size 