diff --git a/postscript-go/src/pkg/postscript/interpreter.go b/postscript-go/src/pkg/postscript/interpreter.go
index 1ddbc26..45481b7 100644
--- a/postscript-go/src/pkg/postscript/interpreter.go
+++ b/postscript-go/src/pkg/postscript/interpreter.go
@@ -77,7 +77,16 @@ func (interpreter *Interpreter) computeReference(ref string) {
 }
 func (interpreter *Interpreter) scan(scanner *Scanner, token int) {
 	if token == Ident {
-		interpreter.computeReference(scanner.TokenText())
+		switch scanner.TokenText() {
+		case "true":
+			interpreter.Push(true)
+		case "false":
+			interpreter.Push(false)
+		case "null":
+			interpreter.Push(nil)
+		default:
+			interpreter.computeReference(scanner.TokenText())
+		}
 	} else if token == '/' {
 		scanner.Scan()
 		interpreter.Push("/" + scanner.TokenText())
@@ -104,7 +113,16 @@ func (interpreter *Interpreter) scanArray(scanner *Scanner) []Value {
 	token := scanner.Scan()
 	for token != EOF && token != ']' {
 		if token == Ident {
-			array = append(array, scanner.TokenText())
+			var v Value = scanner.TokenText()
+			switch scanner.TokenText() {
+			case "true":
+				v = true
+			case "false":
+				v = false
+			case "null":
+				v = nil
+			}
+			array = append(array, v)
 		} else {
 			interpreter.scan(scanner, token)
 			array = append(array, interpreter.Pop())
@@ -119,7 +137,16 @@ func (interpreter *Interpreter) scanProcedure(scanner *Scanner) *ProcedureDefini
 	token := scanner.Scan()
 	for token != EOF && token != '}' {
 		if token == Ident {
-			proceduredef.Add(scanner.TokenText())
+			var v Value = scanner.TokenText()
+			switch scanner.TokenText() {
+			case "true":
+				v = true
+			case "false":
+				v = false
+			case "null":
+				v = nil
+			}
+			proceduredef.Add(v)
 		} else {
 			interpreter.scan(scanner, token)
 			proceduredef.Add(interpreter.Pop())
@@ -146,6 +173,9 @@ func (interpreter *Interpreter) PeekDictionary() Dictionary {
 	stackPointer := len(interpreter.dictionaryStack) - 1
 	return interpreter.dictionaryStack[stackPointer]
 }
+func (interpreter *Interpreter) ClearDictionaries() {
+	interpreter.dictionaryStack = interpreter.dictionaryStack[:2]
+}
 
 func (interpreter *Interpreter) DictionaryStackSize() int {
 	return len(interpreter.dictionaryStack)
@@ -165,6 +195,14 @@ func (interpreter *Interpreter) FindValueInDictionaries(name string) (Value, Dic
 	return nil, nil
 }
 
+func (interpreter *Interpreter) UserDictionary() Dictionary {
+	return interpreter.dictionaryStack[0]
+}
+
+func (interpreter *Interpreter) SystemDictionary() Dictionary {
+	return interpreter.dictionaryStack[0]
+}
+
 func (interpreter *Interpreter) Define(name string, value Value) {
 	interpreter.PeekDictionary()[name] = value
 }
@@ -227,8 +265,8 @@ func (interpreter *Interpreter) ClearOperands() {
 func (interpreter *Interpreter) PopFloat() float {
 	operand := interpreter.Pop()
 	if s, ok := operand.(string); ok {
-		log.Printf("Erro this is a string %s\n", s)
-	}
+		log.Printf("String not float: %s", s)
+	} 
 	return operand.(float)
 }
 
diff --git a/postscript-go/src/pkg/postscript/operators.go b/postscript-go/src/pkg/postscript/operators.go
index 2325ed2..6cc0525 100644
--- a/postscript-go/src/pkg/postscript/operators.go
+++ b/postscript-go/src/pkg/postscript/operators.go
@@ -19,9 +19,11 @@ func (o *PrimitiveOperator) Execute(interpreter *Interpreter) {
 
 
 func save(interpreter *Interpreter) {
+	interpreter.Push("VM Snapshot")
 }
 
 func restore(interpreter *Interpreter) {
+	interpreter.Pop()
 }
 
 
@@ -30,8 +32,12 @@ func initSystemOperators(interpreter *Interpreter) {
 	interpreter.SystemDefine("restore", NewOperator(restore))
 	initStackOperator(interpreter)
 	initMathOperators(interpreter)
+	initArrayOperators(interpreter)
 	initDictionaryOperators(interpreter)
 	initRelationalOperators(interpreter)
 	initControlOperators(interpreter)
+	initMiscellaneousOperators(interpreter)
 	initDrawingOperators(interpreter)
+
+	initConflictingOperators(interpreter)
 }
diff --git a/postscript-go/src/pkg/postscript/operators_array.go b/postscript-go/src/pkg/postscript/operators_array.go
new file mode 100644
index 0000000..16215dd
--- /dev/null
+++ b/postscript-go/src/pkg/postscript/operators_array.go
@@ -0,0 +1,93 @@
+// Copyright 2010 The postscript-go Authors. All rights reserved.
+// created: 13/12/2010 by Laurent Le Goff
+
+package postscript
+
+
+import ()
+//int array array -> Create array of length int
+func array(interpreter *Interpreter) {
+	interpreter.Push(make([]Value, interpreter.PopInt()))
+}
+//array length int -> Return number of elements in array
+func lengtharray(interpreter *Interpreter) {
+	interpreter.Push(float(len(interpreter.Pop().([]Value))))
+}
+//array  index get any -> Return array element indexed by index
+func getarray(interpreter *Interpreter) {
+	index := interpreter.PopInt()
+	array := interpreter.Pop().([]Value)
+	interpreter.Push(array[index])
+}
+//array  index  any put – -> Put any into array at index
+func putarray(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	index := interpreter.PopInt()
+	array := interpreter.Pop().([]Value)
+	array[index] = value
+}
+//array  index  count getinterval subarray -> Return subarray of array starting at index for count elements
+func getinterval(interpreter *Interpreter) {
+	count := interpreter.PopInt()
+	index := interpreter.PopInt()
+	array := interpreter.Pop().([]Value)
+	subarray := make([]Value, count)
+	copy(subarray, array[index:index+count])
+	interpreter.Push(subarray)
+}
+//array1  index  array2 putinterval – Replace subarray of array1 starting at index by array2|packedarray2
+func putinterval(interpreter *Interpreter) {
+	array2 := interpreter.Pop().([]Value)
+	index := interpreter.PopInt()
+	array1 := interpreter.Pop().([]Value)
+	for i, v := range array2 {
+		array1[i+index] = v
+	}
+}
+// any0 … anyn−1  array  astore  array
+// stores the objects any0 to anyn−1 from the operand stack into array, where n is the length of array
+func astore(interpreter *Interpreter) {
+	array := interpreter.Pop().([]Value)
+	n := len(array)
+	for i := 0; i < n; i++ {
+		array[i] = interpreter.Pop()
+	}
+}
+//array aload any0 … any-1   array 
+//Push all elements of array on stack
+func aload(interpreter *Interpreter) {
+	array := interpreter.Pop().([]Value)
+	for _, v := range array {
+		interpreter.Push(v)
+	}
+	interpreter.Push(array)
+}
+//array  proc forall – Execute proc for each element of array
+func forallarray(interpreter *Interpreter) {
+	proc := NewProcedure(interpreter.PopProcedureDefinition())
+	array := interpreter.Pop().([]Value)
+	for _, v := range array {
+		interpreter.Push(v)
+		proc.Execute(interpreter)
+	}
+}
+
+var packing bool = false
+
+func currentpacking(interpreter *Interpreter) {
+	interpreter.Push(packing)
+}
+func setpacking(interpreter *Interpreter) {
+	packing = interpreter.PopBoolean()
+}
+
+func initArrayOperators(interpreter *Interpreter) {
+	interpreter.SystemDefine("array", NewOperator(array))
+	interpreter.SystemDefine("getinterval", NewOperator(getinterval))
+	interpreter.SystemDefine("putinterval", NewOperator(putinterval))
+	interpreter.SystemDefine("astore", NewOperator(astore))
+	interpreter.SystemDefine("aload", NewOperator(aload))
+	interpreter.SystemDefine("currentpacking", NewOperator(currentpacking))
+	interpreter.SystemDefine("setpacking", NewOperator(setpacking))
+
+}
diff --git a/postscript-go/src/pkg/postscript/operators_conflict.go b/postscript-go/src/pkg/postscript/operators_conflict.go
new file mode 100644
index 0000000..e68a216
--- /dev/null
+++ b/postscript-go/src/pkg/postscript/operators_conflict.go
@@ -0,0 +1,96 @@
+package postscript
+
+import (
+	"fmt"
+	"log"
+)
+
+// dictionary copy conflict with stack copy
+// type dicriminant
+func commonCopy(interpreter *Interpreter) {
+	switch v := interpreter.Peek().(type) {
+	case float:
+		copystack(interpreter)
+	case Dictionary:
+		copydict(interpreter)
+	default:
+		panic(fmt.Sprintf("Not yet implemented: %v copy", v))
+	}
+}
+func commonforall(interpreter *Interpreter) {
+	switch v := interpreter.Get(1).(type) {
+	case Dictionary:
+		foralldict(interpreter)
+	case []Value:
+		forallarray(interpreter)
+	case string:
+		panic("Not yet implemented: string proc forall")
+	default:
+		panic(fmt.Sprintf("Not yet implemented: %v proc forall", v))
+	}
+}
+
+func length(interpreter *Interpreter) {
+	switch v := interpreter.Peek().(type) {
+	case Dictionary:
+		lengthdict(interpreter)
+	case []Value:
+		lengtharray(interpreter)
+	case string:
+		panic("Not yet implemented: string proc forall")
+	default:
+		panic(fmt.Sprintf("Not yet implemented: %v length", v))
+	}
+}
+func get(interpreter *Interpreter) {
+	switch v := interpreter.Get(1).(type) {
+	case Dictionary:
+		getdict(interpreter)
+	case []Value:
+		getarray(interpreter)
+	case string:
+		panic("Not yet implemented: string proc forall")
+	default:
+		panic(fmt.Sprintf("Not yet implemented: %v index get", v))
+	}
+}
+func put(interpreter *Interpreter) {
+	switch v := interpreter.Get(2).(type) {
+	case Dictionary:
+		putdict(interpreter)
+	case []Value:
+		putarray(interpreter)
+	case string:
+		panic("Not yet implemented: string proc forall")
+	default:
+		panic(fmt.Sprintf("Not yet implemented: %v index any put", v))
+	}
+}
+
+func readonly(interpreter *Interpreter) {
+	log.Println("readonly, not yet implemented")
+}
+
+func cvlit(interpreter *Interpreter) {
+	log.Println("cvlit, not yet implemented")
+}
+
+func xcheck(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	if _, ok := value.(*ProcedureDefinition); ok {
+		interpreter.Push(true)
+	} else {
+		interpreter.Push(false)
+	}
+}
+
+func initConflictingOperators(interpreter *Interpreter) {
+	interpreter.SystemDefine("copy", NewOperator(commonCopy))
+	interpreter.SystemDefine("forall", NewOperator(commonforall))
+	interpreter.SystemDefine("length", NewOperator(length))
+	interpreter.SystemDefine("get", NewOperator(get))
+	interpreter.SystemDefine("put", NewOperator(put))
+	interpreter.SystemDefine("readonly", NewOperator(readonly))
+	interpreter.SystemDefine("cvlit", NewOperator(cvlit))
+	interpreter.SystemDefine("xcheck", NewOperator(xcheck))
+}
diff --git a/postscript-go/src/pkg/postscript/operators_control.go b/postscript-go/src/pkg/postscript/operators_control.go
index 0b87b7e..d0d6755 100644
--- a/postscript-go/src/pkg/postscript/operators_control.go
+++ b/postscript-go/src/pkg/postscript/operators_control.go
@@ -3,6 +3,21 @@
 
 package postscript
 
+import (
+	"log"
+)
+// any exec – Execute arbitrary object
+func exec(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	if pdef, ok := value.(*ProcedureDefinition); ok {
+		NewProcedure(pdef).Execute(interpreter)
+	} else if procedure, ok := value.(*Procedure); ok {
+		procedure.Execute(interpreter)
+	} else {
+		log.Printf("Push value: %v\n", value)
+		interpreter.Push(value)
+	}
+}
 
 func ifoperator(interpreter *Interpreter) {
 	operator := NewProcedure(interpreter.PopProcedureDefinition())
@@ -35,9 +50,22 @@ func foroperator(interpreter *Interpreter) {
 	}
 }
 
+// any stopped bool -> Establish context for catching stop
+func stopped(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	if pdef, ok := value.(*ProcedureDefinition); ok {
+		NewProcedure(pdef).Execute(interpreter)
+	} else {
+		interpreter.Push(value)
+	}
+	interpreter.Push(false)
+}
+
 
 func initControlOperators(interpreter *Interpreter) {
+	interpreter.SystemDefine("exec", NewOperator(exec))
 	interpreter.SystemDefine("if", NewOperator(ifoperator))
 	interpreter.SystemDefine("ifelse", NewOperator(ifelse))
 	interpreter.SystemDefine("for", NewOperator(foroperator))
+	interpreter.SystemDefine("stopped", NewOperator(stopped))
 }
diff --git a/postscript-go/src/pkg/postscript/operators_dictionary.go b/postscript-go/src/pkg/postscript/operators_dictionary.go
index 8cd6ecf..cee8221 100644
--- a/postscript-go/src/pkg/postscript/operators_dictionary.go
+++ b/postscript-go/src/pkg/postscript/operators_dictionary.go
@@ -7,14 +7,29 @@ package postscript
 import (
 	"log"
 )
-
-
-func get(interpreter *Interpreter) {
-	name := interpreter.PopName()
-	dictionary := interpreter.Pop().(Dictionary)
-	interpreter.Push(dictionary[name])
+//int dict dict -> Create dictionary with capacity for int elements
+func dict(interpreter *Interpreter) {
+	interpreter.Push(NewDictionary(interpreter.PopInt()))
 }
-
+//dict length int -> Return number of entries in dict
+func lengthdict(interpreter *Interpreter) {
+	dictionary := interpreter.Pop().(Dictionary)
+	interpreter.Push(float(len(dictionary)))
+}
+//dict maxlength int -> Return current capacity of dict
+func maxlength(interpreter *Interpreter) {
+	interpreter.Pop()
+	interpreter.Push(float(999999999)) // push arbitrary value
+}
+//dict begin – -> Push dict on dictionary stack
+func begin(interpreter *Interpreter) {
+	interpreter.PushDictionary(interpreter.Pop().(Dictionary))
+}
+//– end – -> Pop current dictionary off dictionary stack
+func end(interpreter *Interpreter) {
+	interpreter.PopDictionary()
+}
+//key  value def – -> Associate key and value in current dictionary
 func def(interpreter *Interpreter) {
 	value := interpreter.Pop()
 	name := interpreter.PopName()
@@ -23,32 +38,7 @@ func def(interpreter *Interpreter) {
 	}
 	interpreter.Define(name, value)
 }
-
-func bind(interpreter *Interpreter) {
-	pdef := interpreter.PopProcedureDefinition()
-	values := make([]Value, len(pdef.Values))
-	for i, value := range pdef.Values {
-		if s, ok := value.(string); ok {
-			firstChar := s[0]
-			if firstChar != '(' && firstChar != '/' {
-				v, _ := interpreter.FindValueInDictionaries(s)
-				operator, isOperator := v.(Operator)
-				if isOperator {
-					values[i] = operator
-				} else {
-					values[i] = value
-				}
-			} else {
-				values[i] = value
-			}
-		} else {
-			values[i] = value
-		}
-	}
-	pdef.Values = values
-	interpreter.Push(pdef)
-}
-
+//key load value -> Search dictionary stack for key and return associated value
 func load(interpreter *Interpreter) {
 	name := interpreter.PopName()
 	value, _ := interpreter.FindValueInDictionaries(name)
@@ -57,19 +47,41 @@ func load(interpreter *Interpreter) {
 	}
 	interpreter.Push(value)
 }
-
-func begin(interpreter *Interpreter) {
-	interpreter.PushDictionary(interpreter.Pop().(Dictionary))
+//key  value store – -> Replace topmost definition of key
+func store(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	key := interpreter.PopName()
+	_, dictionary := interpreter.FindValueInDictionaries(key)
+	if dictionary != nil {
+		dictionary[key] = value
+	}
 }
-
-func end(interpreter *Interpreter) {
-	interpreter.PopDictionary()
+//dict  key get any -> Return value associated with key in dict
+func getdict(interpreter *Interpreter) {
+	key := interpreter.PopName()
+	dictionary := interpreter.Pop().(Dictionary)
+	interpreter.Push(dictionary[key])
 }
-
-func dict(interpreter *Interpreter) {
-	interpreter.Push(NewDictionary(interpreter.PopInt()))
+//dict  key  value put – -> Associate key with value in dict
+func putdict(interpreter *Interpreter) {
+	value := interpreter.Pop()
+	key := interpreter.PopName()
+	dictionary := interpreter.Pop().(Dictionary)
+	dictionary[key] = value
 }
-
+//dict  key undef – Remove key and its value from dict
+func undef(interpreter *Interpreter) {
+	key := interpreter.PopName()
+	dictionary := interpreter.Pop().(Dictionary)
+	dictionary[key] = nil
+}
+//dict  key known bool -> Test whether key is in dict
+func known(interpreter *Interpreter) {
+	key := interpreter.PopName()
+	dictionary := interpreter.Pop().(Dictionary)
+	interpreter.Push(dictionary[key] != nil)
+}
+//key where (dict  true) or false -> Find dictionary in which key is defined
 func where(interpreter *Interpreter) {
 	key := interpreter.PopName()
 	_, dictionary := interpreter.FindValueInDictionaries(key)
@@ -80,14 +92,80 @@ func where(interpreter *Interpreter) {
 		interpreter.Push(true)
 	}
 }
+// dict1  dict2 copy dict2 -> Copy contents of dict1 to dict2
+func copydict(interpreter *Interpreter) {
+	dict2 := interpreter.Pop().(Dictionary)
+	dict1 := interpreter.Pop().(Dictionary)
+	for key, value := range dict1 {
+		dict2[key] = value
+	}
+	interpreter.Push(dict2)
+}
+//dict  proc forall – -> Execute proc for each entry in dict
+func foralldict(interpreter *Interpreter) {
+	proc := NewProcedure(interpreter.PopProcedureDefinition())
+	dict := interpreter.Pop().(Dictionary)
+	for key, value := range dict {
+		interpreter.Push(key)
+		interpreter.Push(value)
+		proc.Execute(interpreter)
+	}
+}
+//– currentdict dict -> Return current dictionary
+func currentdict(interpreter *Interpreter) {
+	interpreter.Push(interpreter.PeekDictionary())
+}
+//– systemdict dict -> Return system dictionary
+func systemdict(interpreter *Interpreter) {
+	interpreter.Push(interpreter.SystemDictionary())
+}
+//– userdict dict -> Return writeable dictionary in local VM
+func userdict(interpreter *Interpreter) {
+	interpreter.Push(interpreter.UserDictionary())
+}
+//– globaldict dict -> Return writeable dictionary in global VM
+func globaldict(interpreter *Interpreter) {
+	interpreter.Push(interpreter.UserDictionary())
+}
+//– statusdict dict -> Return product-dependent dictionary
+func statusdict(interpreter *Interpreter) {
+	interpreter.Push(interpreter.UserDictionary())
+}
+//– countdictstack int -> Count elements on dictionary stack
+func countdictstack(interpreter *Interpreter) {
+	interpreter.Push(float(interpreter.DictionaryStackSize()))
+}
+//array dictstack subarray -> Copy dictionary stack into array
+func dictstack(interpreter *Interpreter) {
+	panic("No yet implemenented")
+}
+//– cleardictstack – -> Pop all nonpermanent dictionaries off dictionary stack
+func cleardictstack(interpreter *Interpreter) {
+	interpreter.ClearDictionaries()
+}
 
 func initDictionaryOperators(interpreter *Interpreter) {
-	interpreter.SystemDefine("get", NewOperator(get))
-	interpreter.SystemDefine("def", NewOperator(def))
-	interpreter.SystemDefine("load", NewOperator(load))
-	interpreter.SystemDefine("bind", NewOperator(bind))
+	interpreter.SystemDefine("dict", NewOperator(dict))
+	//interpreter.SystemDefine("length", NewOperator(length)) // already define in operators_conflict.go
+	interpreter.SystemDefine("maxlength", NewOperator(maxlength))
 	interpreter.SystemDefine("begin", NewOperator(begin))
 	interpreter.SystemDefine("end", NewOperator(end))
-	interpreter.SystemDefine("dict", NewOperator(dict))
+	interpreter.SystemDefine("def", NewOperator(def))
+	interpreter.SystemDefine("load", NewOperator(load))
+	interpreter.SystemDefine("store", NewOperator(store))
+	//interpreter.SystemDefine("get", NewOperator(get)) // already define in operators_conflict.go
+	//interpreter.SystemDefine("put", NewOperator(put)) // already define in operators_conflict.go
+	interpreter.SystemDefine("undef", NewOperator(undef))
+	interpreter.SystemDefine("known", NewOperator(known))
 	interpreter.SystemDefine("where", NewOperator(where))
+	//interpreter.SystemDefine("copydict", NewOperator(copydict)) // already define in operators_conflict.go
+	//interpreter.SystemDefine("foralldict", NewOperator(foralldict)) // already define in operators_conflict.go
+	interpreter.SystemDefine("currentdict", NewOperator(currentdict))
+	interpreter.SystemDefine("systemdict", NewOperator(systemdict))
+	interpreter.SystemDefine("userdict", NewOperator(userdict))
+	interpreter.SystemDefine("globaldict", NewOperator(globaldict))
+	interpreter.SystemDefine("statusdict", NewOperator(statusdict))
+	interpreter.SystemDefine("countdictstack", NewOperator(countdictstack))
+	interpreter.SystemDefine("dictstack", NewOperator(dictstack))
+	interpreter.SystemDefine("cleardictstack", NewOperator(cleardictstack))
 }
diff --git a/postscript-go/src/pkg/postscript/operators_graphics.go b/postscript-go/src/pkg/postscript/operators_graphics.go
index f135ed5..129ce52 100644
--- a/postscript-go/src/pkg/postscript/operators_graphics.go
+++ b/postscript-go/src/pkg/postscript/operators_graphics.go
@@ -1,19 +1,17 @@
 // Copyright 2010 The postscript-go Authors. All rights reserved.
 // created: 13/12/2010 by Laurent Le Goff
 
+// Graphics operators
 package postscript
 
 import (
-	"log"
 	"image"
 	"draw2d.googlecode.com/svn/trunk/draw2d/src/pkg/draw2d"
 	"math"
+	"log"
 )
 
 
-// begin Primitive Operator implementation
-
-
 //Path Construction Operators
 func newpath(interpreter *Interpreter) {
 	interpreter.GetGraphicContext().BeginPath()
@@ -74,7 +72,7 @@ func rcurveto(interpreter *Interpreter) {
 }
 
 func clippath(interpreter *Interpreter) {
-
+	log.Printf("clippath not yet implemented")
 }
 
 func stroke(interpreter *Interpreter) {
@@ -194,7 +192,7 @@ func setcmybcolor(interpreter *Interpreter) {
 func setdash(interpreter *Interpreter) {
 	offset := interpreter.PopInt()
 	dash := interpreter.PopArray()
-	log.Printf("dash: %v, offset: %d \n", dash, offset)
+	log.Printf("setdash not yet implemented dash: %v, offset: %d \n", dash, offset)
 }
 
 func setlinejoin(interpreter *Interpreter) {
@@ -223,6 +221,7 @@ func setlinecap(interpreter *Interpreter) {
 
 func setmiterlimit(interpreter *Interpreter) {
 	interpreter.PopInt()
+	log.Printf("setmiterlimit not yet implemented")
 }
 
 func setlinewidth(interpreter *Interpreter) {
@@ -230,37 +229,49 @@ func setlinewidth(interpreter *Interpreter) {
 }
 
 func showpage(interpreter *Interpreter) {
-
+	log.Printf("showpage may be an implementation specific, override show page to generate multi page images")
 }
 
 func show(interpreter *Interpreter) {
 	s := interpreter.PopString()
 	interpreter.GetGraphicContext().FillString(s)
+	log.Printf("show not really implemented")
+}
+//ax  ay  string ashow – -> Add (ax , ay) to width of each glyph while showing string
+func ashow(interpreter *Interpreter) {
+	log.Printf("ashow not really implemented")
+	s := interpreter.PopString()
+	interpreter.PopFloat()
+	interpreter.PopFloat()
+	interpreter.GetGraphicContext().FillString(s)
 }
 
 func findfont(interpreter *Interpreter) {
-
+	log.Printf("findfont not yet implemented")
 }
 
 func scalefont(interpreter *Interpreter) {
-
+	log.Printf("scalefont not yet implemented")
 }
 
 func setfont(interpreter *Interpreter) {
-
+	log.Printf("setfont not yet implemented")
 }
 
 func stringwidth(interpreter *Interpreter) {
 	interpreter.Push(10.0)
 	interpreter.Push(10.0)
+	log.Printf("stringwidth not yet implemented")
 }
 
 func setflat(interpreter *Interpreter) {
 	interpreter.Pop()
+	log.Printf("setflat not yet implemented")
 }
 
 func currentflat(interpreter *Interpreter) {
 	interpreter.Push(1.0)
+	log.Printf("currentflat not yet implemented")
 }
 
 
@@ -308,6 +319,7 @@ func initDrawingOperators(interpreter *Interpreter) {
 	interpreter.SystemDefine("stroke", NewOperator(stroke))
 	interpreter.SystemDefine("fill", NewOperator(fill))
 	interpreter.SystemDefine("show", NewOperator(show))
+	interpreter.SystemDefine("ashow", NewOperator(ashow))
 	interpreter.SystemDefine("showpage", NewOperator(showpage))
 
 	interpreter.SystemDefine("findfont", NewOperator(findfont))
@@ -333,7 +345,7 @@ func initDrawingOperators(interpreter *Interpreter) {
 	interpreter.SystemDefine("currentflat", NewOperator(currentflat))
 
 	// Coordinate System and Matrix operators
-	interpreter.SystemDefine("matrix", NewOperator(transform))
+	interpreter.SystemDefine("matrix", NewOperator(matrix))
 	interpreter.SystemDefine("transform", NewOperator(transform))
 	interpreter.SystemDefine("itransform", NewOperator(itransform))
 	interpreter.SystemDefine("translate", NewOperator(translate))
diff --git a/postscript-go/src/pkg/postscript/operators_misc.go b/postscript-go/src/pkg/postscript/operators_misc.go
new file mode 100644
index 0000000..a27f701
--- /dev/null
+++ b/postscript-go/src/pkg/postscript/operators_misc.go
@@ -0,0 +1,42 @@
+// Copyright 2010 The postscript-go Authors. All rights reserved.
+// created: 13/12/2010 by Laurent Le Goff
+
+// Miscellaneous Operators
+package postscript
+
+import (
+	"log"
+)
+
+//proc bind proc Replace operator names in proc with operators; perform idiom recognition
+func bind(interpreter *Interpreter) {
+	pdef := interpreter.PopProcedureDefinition()
+	values := make([]Value, len(pdef.Values))
+	for i, value := range pdef.Values {
+		if s, ok := value.(string); ok {
+			firstChar := s[0]
+			if firstChar != '(' && firstChar != '/' {
+				v, _ := interpreter.FindValueInDictionaries(s)
+				operator, isOperator := v.(Operator)
+				if v == nil {
+					log.Printf("Can't find def: %s\n", s)
+				}
+				if isOperator {
+					values[i] = operator
+				} else {
+					values[i] = value
+				}
+			} else {
+				values[i] = value
+			}
+		} else {
+			values[i] = value
+		}
+	}
+	pdef.Values = values
+	interpreter.Push(pdef)
+}
+
+func initMiscellaneousOperators(interpreter *Interpreter) {
+	interpreter.SystemDefine("bind", NewOperator(bind))
+}
diff --git a/postscript-go/src/pkg/postscript/operators_relational.go b/postscript-go/src/pkg/postscript/operators_relational.go
index 546a90f..0f43169 100644
--- a/postscript-go/src/pkg/postscript/operators_relational.go
+++ b/postscript-go/src/pkg/postscript/operators_relational.go
@@ -10,6 +10,12 @@ func eq(interpreter *Interpreter) {
 	interpreter.Push(value1 == value2)
 }
 
+func ne(interpreter *Interpreter) {
+	value1 := interpreter.Pop()
+	value2 := interpreter.Pop()
+	interpreter.Push(value1 != value2)
+}
+
 func lt(interpreter *Interpreter) {
 	f2 := interpreter.PopFloat()
 	f1 := interpreter.PopFloat()
@@ -18,5 +24,6 @@ func lt(interpreter *Interpreter) {
 
 func initRelationalOperators(interpreter *Interpreter) {
 	interpreter.SystemDefine("eq", NewOperator(eq))
+	interpreter.SystemDefine("ne", NewOperator(ne))
 	interpreter.SystemDefine("lt", NewOperator(lt))
 }
diff --git a/postscript-go/src/pkg/postscript/operators_stack.go b/postscript-go/src/pkg/postscript/operators_stack.go
index e55a4ea..e9c3325 100644
--- a/postscript-go/src/pkg/postscript/operators_stack.go
+++ b/postscript-go/src/pkg/postscript/operators_stack.go
@@ -19,6 +19,7 @@ func exch(interpreter *Interpreter) {
 func dup(interpreter *Interpreter) {
 	interpreter.Push(interpreter.Peek())
 }
+
 //any1  …  anyn  n copy any1  …  anyn  any1  …  anyn -> Duplicate top n elements
 func copystack(interpreter *Interpreter) {
 	n := interpreter.PopInt()
@@ -77,7 +78,6 @@ func initStackOperator(interpreter *Interpreter) {
 	interpreter.SystemDefine("pop", NewOperator(pop))
 	interpreter.SystemDefine("exch", NewOperator(exch))
 	interpreter.SystemDefine("dup", NewOperator(dup))
-	interpreter.SystemDefine("copy", NewOperator(copystack))
 	interpreter.SystemDefine("index", NewOperator(index))
 	interpreter.SystemDefine("roll", NewOperator(roll))
 	interpreter.SystemDefine("clear", NewOperator(clear))
diff --git a/postscript-go/src/pkg/postscript/scanner.go b/postscript-go/src/pkg/postscript/scanner.go
index a8e0ab7..79aa3d5 100644
--- a/postscript-go/src/pkg/postscript/scanner.go
+++ b/postscript-go/src/pkg/postscript/scanner.go
@@ -284,7 +284,7 @@ func (s *Scanner) error(msg string) {
 
 func (s *Scanner) scanIdentifier() int {
 	ch := s.next() // read character after first '_' or letter
-	for ch == '_' || unicode.IsLetter(ch) || unicode.IsDigit(ch) || ch == '.' {
+	for ch == '_' || unicode.IsLetter(ch) || unicode.IsDigit(ch) || ch == '.' || ch == '-' || ch == '`' {
 		ch = s.next()
 	}
 	return ch
@@ -489,7 +489,7 @@ redo:
 	// determine token value
 	tok := ch
 	switch {
-	case unicode.IsLetter(ch) || ch == '_':
+	case unicode.IsLetter(ch) || ch == '_' || ch == '`':
 		if s.Mode&ScanIdents != 0 {
 			tok = Ident
 			ch = s.scanIdentifier()
@@ -499,7 +499,8 @@ redo:
 	case ch == '-': // minus
 		ch = s.next()
 		if !isDecimal(ch) {
-			fmt.Printf("Error may be a digi: %c\n")
+			s.error(fmt.Sprintf("Error may be a digi: %c\n", ch))
+
 		} else {
 			if s.Mode&(ScanInts|ScanFloats) != 0 {
 				tok, ch = s.scanNumber(ch)
diff --git a/postscript-go/test_files/golfer.ps b/postscript-go/test_files/golfer.ps
new file mode 100644
index 0000000..2ef8c02
--- /dev/null
+++ b/postscript-go/test_files/golfer.ps
@@ -0,0 +1,1398 @@
+%!PS-Adobe-2.0 EPSF-1.2
+%%Creator:Adobe Illustrator(TM) 1.0b2-
+%%Title:golfer art+
+%%CreationDate:1/6/87 9:32 AM
+%%DocumentFonts:Helvetica-Bold
+%%BoundingBox:7 31 577 726
+%%TemplateBox:0 -48 576 672
+%%EndComments
+100 dict begin
+/q{bind def}bind def
+/Q{load def}q
+/x{exch def}q
+/X/def Q
+/g{/_g x/p{_g setgray}X}q
+/G{/_G x/P{_G setgray}X}q
+/k{/_b x/_g x/_r x/p{_r _g _b setrgbcolor}X}q
+/K{/_B x/_G x/_R x/P{_R _G _B setrgbcolor}X}q
+/d/setdash Q
+/i/setflat Q
+/j/setlinejoin Q
+/J/setlinecap Q
+/M/setmiterlimit Q
+/w/setlinewidth Q
+/_C{.25 sub round .25 add}q
+/_c{transform _C exch _C exch itransform}q
+/c{_c curveto}q
+/C/c Q
+/v{currentpoint 6 2 roll _c curveto}q
+/V/v Q
+/y{_c 2 copy curveto}q
+/Y/y Q
+/l{_c lineto}q
+/L/l Q
+/m{_c moveto}q
+/_e[]X
+/_E{_e length 0 ne{gsave 1 g 0 G 1 i 0 J 0 j .5 w 10 M[]0 d
+/Helvetica-Bold 24 0 0 1 z
+[0.966 0.259 -0.259 0.966
+_e 0 get _e 2 get add 2 div _e 1 get _e 3 get add 2 div]a
+(ERROR: can't fill a path)t T grestore}if}q
+/n/newpath Q
+/N/newpath Q
+/F{p{fill}stopped{/_e[pathbbox]X n _E}if}q
+/f{closepath F}q
+/S{P stroke}q
+/s{closepath S}q
+/B{gsave F grestore S}q
+/b{closepath B}q
+/u{}q
+/U{}q
+/_s/ashow Q
+/_S{(?)exch{2 copy 0 exch put pop dup true charpath currentpoint _m setmatrix
+stroke _M setmatrix moveto 3 copy pop rmoveto}forall pop pop pop n}q
+/_A{_a moveto _t exch 0 exch}q
+/_L{0 _l neg translate _M currentmatrix pop}q
+/_w{dup stringwidth exch 3 -1 roll length 1 sub _t mul add exch}q
+/_z[{0 0}bind{dup _w exch neg 2 div exch neg 2 div}bind
+{dup _w exch neg exch neg}bind]X
+/z{_z exch get/_a x/_t x/_l x exch findfont exch scalefont setfont}q
+/_d{matrix currentmatrix X}q
+/_D{/_m _d gsave concat/_M _d}q
+/e{_D p/t{_A _s _L}X}q
+/r{_D P/t{_A _S _L}X}q
+/a{_D/t{dup p _A _s P _A _S _L}X}q
+/o{_D/t{pop _L}X}q
+/T{grestore}q
+/Z{findfont begin currentdict dup length dict begin
+{1 index/FID ne{X}{pop pop}ifelse}forall/FontName exch X dup length 0 ne
+{/Encoding Encoding 256 array copy X 0 exch{dup type/nametype eq
+{Encoding 2 index 2 index put pop 1 add}{exch pop}ifelse}forall}if pop
+currentdict dup end end/FontName get exch definefont pop}q
+n
+%%EndProlog
+u
+0.9 g
+0 G
+1 i
+0 J
+0 j
+1 w
+10 M
+[]0 d
+%%Note:
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+%%Trailer
+_E end
+showpage