anchor.diff:                      | _ -> struct (Violation (["InvalidIndexer"; String.capitalize fnName], "Invalid indexer '" + indexer + "' for V4.", originOpt), world)
                   | _ -> failwithumf ()
               | struct ([|_; _|], world) -> struct (Violation (["InvalidArgumentType"; String.capitalize fnName], "Application of " + fnName + " requires a V4 index.", originOpt), world)
  -            | struct (_, world) -> struct (Violation (["InvalidArgumentCount"; String.capitalize fnName], "Incorrect number of arguments for application of '" + fnName + "'; 2 arguments required.", originOpt), world)
  +            | struct (_, world) -> struct (Violation (["InvalidArgumentCount"; String.capitalize fnName], "Incorrect number of arguments for '" + fnName + "'; 2 arguments required.", originOpt), world)
   
           static member internal evalUpdateV4Extrinsic fnName exprs originOpt world =
               match World.evalManyInternal exprs world with
  
positive.code:                     | _ -> struct (Violation (["InvalidIndexer"; String.capitalize fnName], "Invalid indexer '" + indexer + "' for V2i.", originOpt), world)
                  | _ -> failwithumf ()
              | struct ([|_; _; _|], world) -> struct (Violation (["InvalidArgumentType"; String.capitalize fnName], "Application of " + fnName + " requires a V2i target, a keyword index of X or Y, and an Int value.", originOpt), world)
              | struct (_, world) -> struct (Violation (["InvalidArgumentCount"; String.capitalize fnName], "Incorrect number of arguments for application of '" + fnName + "'; 2 arguments required.", originOpt), world)
  
          static member internal evalGetExtrinsic fnName exprs originOpt world =
              match World.evalManyInternal exprs world with
  
negative.code:                     | _ -> struct (Violation (["InvalidIndexer"; String.capitalize fnName], "Invalid indexer '" + indexer + "' for V4.", originOpt), world)
                  | _ -> failwithumf ()
              | struct ([|_; _; _|], world) -> struct (Violation (["InvalidArgumentType"; String.capitalize fnName], "Application of " + fnName + " requires a V4 target, a keyword index of X or Y, and an Int value.", originOpt), world)
              | struct (_, world) -> struct (Violation (["InvalidArgumentCount"; String.capitalize fnName], "Incorrect number of arguments for '" + fnName + "'; 2 arguments required.", originOpt), world)
  
          static member internal evalV2iExtrinsic fnName exprs originOpt world =
              match World.evalManyInternal exprs world with
  