The assignment of affinities consists of two parts, the definition
of the affinity space dimensions as used for the init process, and
the association sub systems with affinity locations (relative to the
affinity space). The affinity space is configured as a sub node of the
config node. For example, the following declaration describes an
affinity space of 4x2:
<config>
...
<affinity_space width="4" height="2" />
...
</config>
Subsystems can be constrained to parts of the affinity space using
the '<affinity>' sub node of a '<start>' entry:
<config>
...
<start name="loader">
<affinity xpos="0" ypos="1" width="2" height="1" />
...
</start>
...
</config>
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