I'm not sure that numbering the optimisation problem components helps in understanding the formulation process (i.e., the define an order in the general formulation), especially when they then appear out of order in e.g. defining eqs. 5.9 and 5.10. It also doesn't help that you have (0) parameters and then (2) objectives - somehow I keep thinking objectives when I see (0)!
Signposting them with colours and a symbol is quite nice though - breaks up the monotony a little - but letters could be easier to track? I.e. (P) parameters, (O) objectives, (V) variables, and (C) constraints.
I'm not sure that numbering the optimisation problem components helps in understanding the formulation process (i.e., the define an order in the general formulation), especially when they then appear out of order in e.g. defining eqs. 5.9 and 5.10. It also doesn't help that you have (0) parameters and then (2) objectives - somehow I keep thinking objectives when I see
(0)
!Signposting them with colours and a symbol is quite nice though - breaks up the monotony a little - but letters could be easier to track? I.e. (P) parameters, (O) objectives, (V) variables, and (C) constraints.