Tutorial on the basic interaction function

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Variables that need to be seen in the GUI (morphogens, growth factors, signals, etc.) are always set up (declared) from the GUI using Morphogen Panel. We have evolved a naming convention

prefixes	id_ identity factor s_ signalling factor v_ visual monitor f_ finite element monitor
suffixes	_p, _l, _a, _i

Full details of types of morphogens and factors

Pre-defined variables	dt computational step size realtime virtual time of the model
Pre-defined functions	Steps(m) current step number in Mesh m pro(k,id) promote by k in regions designated by factor, id inh(k,id) inhibit by k in regions designated by factor, id local_setproperties( m ) initialise Mesh properties