user_operator command

[omer]

Dear Community,

Is there a way to define user operator in HP Prime. There is such a command in XCAS.

The user_operator command lets you define an operator or delete an operator you previously defined. When you use an operator you defined, you have to make sure that you leave spaces around the operator.
Examples
Let R be defined on R × R by x R y = xy + x + y. To input R:
> user_operator("R",(x,y)->x*y+x+y,Binary)
1
(Do not forget to put spaces around R.)
> 5 R 7
4