   Plugin's: byte aligned read or use SDK and dll's? Engine platform:What do you think?
  Every game engine has plugin''s like for models (max, maya), for 2d graphics (corel draw), for package(zip,rar).The question not only about convenience of reading, but also about problems of licensing the file format when using it. So what do you think about that?What is the good approach for that problem, maybe you have some useful recipes.And at the end there is one more question.What do you think about such platforms for game engines like ps2 and xbox. Are they promising platforms? Max 
  Actually,I''ve never heard about File format license before but if it is really exist, the easiest (and tricky) way to avoid paying is by changing the some headers or just change its arrangment but keep the main concept and structure.Sorry,I couldn''t understand your second question because my English is quite poor. ;  Yes, this is the way out to make some changes of headers or smth in the file signature. But when the engine licensing procedure comes, i think the code scanned, and there can be some problems. So i think, the files should be packed, or encrypted with some own algorithm.But i want to know about the way the programmers used to make plugin''s, what was the approach, to make plugin which use dll''s, or to make actual file reader to get data?And the last q was about platforms such as playstation2 and x-box(microsoft). Is this whether a perspective for next generation engines development.