Customize
---------

The ``customize`` command allows properties of a specific cell to
be modified.

Examples:

* Delete all synapses where the specified pre-synaptic unit is
  involved in a synaptic interaction as index 0 and where the post-syn
  unit is in the specified layer::

   <customize>
	type        synapse_delete         # Delete synapses between units
  	unit_pre    exs_11_11_0            # Pre-synaptic unit
  	layer_post  ds                     # Post-synaptic layer name
  	si_index    0                      # Synaptic interaction index
   </customize>

* Adjust all synapses between the specified pre-synaptic unit and the
  post-synaptic layer.  Currently, if there is a synaptic interaction,
  the weight only gets adjusted if the pre-syn unit has cell index 0::

    <customize>
	type        synapse_adjust         # Adjust synaptic weight
  	unit_pre    exs_11_11_0            # Pre-synaptic unit
  	layer_post  ds                     # Post-synaptic layer name
  	syn_weight  6.23                   # Synaptic weight
    </customize>

* Add a synapse between the specified pre-synaptic unit and the
  post-synaptic unit (layers not impl'd yet)::

    <customize>
	type        synapse_add            # Add a synapse
  	unit_pre    exs_11_11_0            # Pre-synaptic unit
  	unit_post   ds_0_0_0               # Post-synaptic unit
  	syn_weight  6.23                   # Synaptic weight
  	syn_tdelay  0.0                    # Time delay (s), axon transit time
  	syn_type    1                      # Synaptic type, 1-ex, 2-in
    </customize>