Tutorial on the basic interaction function

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