Idea: new keyword OPERATOR

[StephenG1CMZ]

Having the option to use infix notation when you are used to it can certainly be clearer, but your syntax looks like you would only use the infix notation for the functions you define.

I would suggest instead a syntax more like that used in POP-2:

Definition:

EXPORT matrixmultiply(a,b)
Begin
End -> "***"; //map this procedure to infix symbol ***

Call either as now:
Matrixmuliply(a,b); //useful if you don't know the infix symbol
Or in infix if you like:
A *** b; //more readable

(In fact, in POP-2 you could just use a single "*", and it could work out which multiply you needed based on parameter types:
two reals => internal multiply,
Two matrices => use defined matrix multiply procedure etc.)