blocked_representation
======================

A blocked_representation is a representation that indicates the concatentation
of multiple identical representations; it is therefore used to produce layers
that act partly or wholly as a parallel set of homogeneous layers.

set_element
===========

	some_br set_element a_rep

Set the representation that is (conceptually) internally repeated in
`some_br` to be `a_rep`.

number
======

	some_br number an_int

Set the number of repetitions of `some_br` to be `an_int`.

block
=====

	some_br block an_int a_rep

Set the representation and number simultaneously.

element
=======

	some_br element

Return the representation that is conceptually repeated to produce `some_br`