SA0163: Nested comments

Function	Determines code positions with nested comments.
Reason	Nested comments are difficult to read and should be avoided.
Importance	Low
PLCopen rule	C3

Samples:

The four nested comments identified accordingly in the following sample each result in the error: "SA0163: Nested comment '<…>'".

(* That is
(* nested comment number 1 *)
*)
PROGRAM MAIN
VAR
    (* That is
    // nested comment
    number 2 *)
    a        : DINT;
    b        : DINT;
     
    (* That is
    (* nested comment number 3 *) *)
    c        : BOOL;
    nCounter : INT;
END_VAR

(* That is // nested comment number 4 *) 
 
nCounter := nCounter + 1;
 
(* This is not a nested comment *)