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camlspotter committed 521954a

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 val parenbox : assoc -> level -> ppr -> ppr
 val binop    : assoc -> level -> op:ppr -> ppr -> ppr -> ppr
 val list     : level -> ppr -> ppr list -> ppr
+(** [list lev sep pprs] is to create a list without a box *)
+
 val prefix   : level -> op:ppr -> ppr -> ppr
 val postfix  : level -> op:ppr -> ppr -> ppr
 
 val parens : string -> string -> ppr -> ppr
 (** Surround the given ppr with the left and right strings.
-    The level for ppr is reset to -1.0. *)
+    The level for the internal ppr is reset to -1.0 to prevent from having auto parens for it *)
 
 (** OCaml like printers *)
 module OCaml : sig