One problem from my past experience at architecture industry: every country has it own rules & regulations for represent drawings of designs(documentation)(many

One problem from my past experience at architecture industry: every country has it own rules & regulations for represent drawings of designs(documentation)(many small things like floor plans, sizes, fonts, frames, symbols descriptions all are different) as result CAD software developed in one country very hard to use in another without lot of weird tricks which works only for subset of original functionality. I believe it may be solved be separating actual building model and view/render representation like AST and interpreter. But unfortunately is super hard to do just because that AST model should include lot of complex stuff.