in the documentation of Racket web site i see that Scheme+ is mentioned in the "Miscellaneous Libraries" portion.
I remember, i mentioned first Scheme+ as a library in discussion years ago, but this is an error, this should be considered now as a syntax extension of Scheme language that make of Scheme+ a language itself.
Because a library add function and macro in the language, but Scheme+ add infix language, square bracket indexing and more which require a special parser and so can be considered as a language (even if it remains 100% backward compatible with Scheme sexpr).
Also i have a lot of new idea that will be added in Scheme+ in the future to make it faster with a typing system that should save all the time in dispatching the way C++ compiler make it.
Also Scheme+ is not only Racket dependant, but the internal implementation make it run also for Guile , Kawa and i should update all this in the future and possibly port it to other Scheme implementations.
For this reason i would suggest to place Scheme+ in the Racket web site in the portion called " Other Languages in the Racket Environment " in the documentation.
I thought there was a way to specify where something appears on the main documentation page in the metadata in the info.rkt file but I’ve forgotten the exact mechanism.
Thank you all.It worked well, i was able to show Scheme+ in Language and optionally Curly infix SRFIs in Parsing Library and the example about plait is interesting as i'm searching and studying some light typing system for scheme sexpr, i will surely have a look again at that and like that typing systems soon.
update: i forget to show the code solution, it is in info.rkt files: