diff --git a/env/env.go b/env/env.go
index d6906f5f..51e8914b 100755
--- a/env/env.go
+++ b/env/env.go
@@ -2,7 +2,6 @@ package env
 
 import (
 	"fmt"
-	"reflect"
 	"sort"
 	"strings"
 	"sync"
@@ -15,12 +14,6 @@ import (
 	Set(word int, val Object) Object
 } */
 
-// UTIL
-
-func IsPointer(v interface{}) bool {
-	return reflect.TypeOf(v).Kind() == reflect.Ptr
-}
-
 // This is experimental env without map for Functions with up to two variables
 
 type EnvR2 struct {
@@ -339,7 +332,7 @@ func NewProgramState(ser TSeries, idx *Idxs) *ProgramState {
 		"",
 		"",
 		false,
-		NewLiveEnv(),
+		nil, // NewLiveEnv(),
 		Rye2Dialect,
 		NewEyrStack(),
 	}
diff --git a/env/envutil.go b/env/envutil.go
index 0bb7e7e6..577c3d88 100644
--- a/env/envutil.go
+++ b/env/envutil.go
@@ -2,6 +2,7 @@ package env
 
 import (
 	"fmt"
+	"reflect"
 	"time"
 )
 
@@ -39,3 +40,22 @@ func ToRyeValue(val any) Object {
 		return Void{}
 	}
 }
+
+func IsPointer(x any) bool {
+	return reflect.TypeOf(x).Kind() == reflect.Pointer
+}
+
+func IsPointer2(x reflect.Value) bool {
+	return x.Kind() == reflect.Ptr
+}
+
+func DereferenceAny(x any) any {
+	if reflect.TypeOf(x).Kind() == reflect.Ptr {
+		return reflect.ValueOf(x).Elem().Interface()
+	}
+	return x
+}
+
+func ReferenceAny(x any) any {
+	return &x
+}
diff --git a/env/spreadsheet.go b/env/spreadsheet.go
index 1eb7e6d9..9d361fe8 100644
--- a/env/spreadsheet.go
+++ b/env/spreadsheet.go
@@ -322,7 +322,11 @@ func (s SpreadsheetRow) GetKind() int {
 
 // Inspect returns a string
 func (s SpreadsheetRow) Inspect(e Idxs) string {
-	return "[SpreadsheetRow(" + strconv.Itoa(len(s.Values)) + ")" + "]"
+	p := ""
+	if IsPointer(s) {
+		p = "REF:"
+	}
+	return "[" + p + "SpreadsheetRow(" + strconv.Itoa(len(s.Values)) + ")" + "]"
 }
 
 // Inspect returns a string representation of the Integer.
diff --git a/evaldo/builtins.go b/evaldo/builtins.go
index 55f3faa5..58f98822 100644
--- a/evaldo/builtins.go
+++ b/evaldo/builtins.go
@@ -835,6 +835,33 @@ var builtins = map[string]*env.Builtin{
 				return &sp
 			case env.Block:
 				return &sp
+			case env.Native:
+				return &sp
+			default:
+				return MakeArgError(ps, 1, []env.Type{env.SpreadsheetType}, "thaw")
+			}
+		},
+	},
+
+	"ref": { // temp duplicate
+		Argsn: 1,
+		Doc:   "Makes a value (currently only spreadsheets) mutable instead of immutable",
+		Pure:  true,
+		Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
+			switch sp := arg0.(type) {
+			case env.Spreadsheet:
+				return &sp
+			case *env.Spreadsheet:
+				return sp
+			case env.Dict:
+				return &sp
+			case env.List:
+				return &sp
+			case env.Block:
+				return &sp
+			case env.Native:
+				sp.Value = env.ReferenceAny(sp.Value)
+				return &sp
 			default:
 				return MakeArgError(ps, 1, []env.Type{env.SpreadsheetType}, "thaw")
 			}
@@ -863,6 +890,31 @@ var builtins = map[string]*env.Builtin{
 		},
 	},
 
+	"deref": { // TEMP duplicate
+		Argsn: 1,
+		Doc:   "Makes a value (currently only spreadsheets) again immutable",
+		Pure:  true,
+		Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
+			switch sp := arg0.(type) {
+			case env.Spreadsheet:
+				return sp
+			case *env.Spreadsheet:
+				return *sp
+			case *env.Dict:
+				return *sp
+			case *env.List:
+				return *sp
+			case *env.Block:
+				return *sp
+			case *env.Native:
+				sp.Value = env.DereferenceAny(sp.Value)
+				return *sp
+			default:
+				return MakeArgError(ps, 1, []env.Type{env.SpreadsheetType}, "thaw")
+			}
+		},
+	},
+
 	"get_": { // *** find a name or decide on order of naming with generic words clashes with
 		Argsn: 1,
 		Doc:   "Returns value of the word in context",
@@ -1698,7 +1750,11 @@ var builtins = map[string]*env.Builtin{
 		Argsn: 1,
 		Doc:   "Prints information about a value.",
 		Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
-			fmt.Println(arg0.Inspect(*ps.Idx))
+			p := ""
+			if env.IsPointer(arg0) {
+				p = "REF:"
+			}
+			fmt.Println(p + arg0.Inspect(*ps.Idx))
 			return arg0
 		},
 	},
@@ -1709,6 +1765,19 @@ var builtins = map[string]*env.Builtin{
 			return *env.NewString(arg0.Inspect(*ps.Idx))
 		},
 	},
+	"is-ref": { // **
+		Argsn: 1,
+		Doc:   "Prints information about a value.",
+		Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
+			// fmt.Println(arg0.Inspect(*ps.Idx))
+			if env.IsPointer(arg0) {
+				return env.NewInteger(1)
+			} else {
+				return env.NewInteger(0)
+			}
+		},
+	},
+
 	"esc": {
 		Argsn: 1,
 		Doc:   "Creates an escape sequence \033{}",
diff --git a/evaldo/repl.go b/evaldo/repl.go
index 2f2f4294..2c953580 100644
--- a/evaldo/repl.go
+++ b/evaldo/repl.go
@@ -240,11 +240,15 @@ func (r *Repl) evalLine(es *env.ProgramState, code string) string {
 
 		if !es.ErrorFlag && es.Res != nil {
 			r.prevResult = es.Res
+			p := ""
+			if env.IsPointer(es.Res) {
+				p = "Ref"
+			}
 			resultStr := es.Res.Inspect(*genv)
 			if r.dialect == "eyr" {
 				resultStr = strings.Replace(resultStr, "Block:", "Stack:", 1) // TODO --- temp / hackish way ... make stack display itself or another approach
 			}
-			output = fmt.Sprintf("\033[38;5;37m" + resultStr + "\x1b[0m")
+			output = fmt.Sprintf("\033[38;5;37m" + p + resultStr + "\x1b[0m")
 		}
 
 		es.ReturnFlag = false
diff --git a/tests/main.rye b/tests/main.rye
index 426e096e..be5f5f9f 100644
--- a/tests/main.rye
+++ b/tests/main.rye
@@ -2,7 +2,7 @@
 ; Run test cases: ../rye main.rye test
 ; Generate documentation: ../rye main.rye doc > builtins.html
 
-rye .args\raw :arg
+rye .args\raw |load :args
 root-ctx: current-ctx
 
 test-framework: context {
@@ -85,14 +85,19 @@ generate-doc-file: fn { filename menu } {
 
 menu: { "basics" "structures" "validation" "misc" "spreadsheet_mutations" }
 
-switch arg {
-	"test" {
+switch first args  {
+	test {
 		errors: 0
-		for menu { + ".rye" |to-file |probe |probe |load |do\in* test-framework |+ errors ::errors }
-		print "==============="
-		print "FAILED TESTS: " + errors
+		either args .length? = 1 {
+			for menu { + ".rye" |to-file |load |do\in* test-framework |+ errors ::errors }
+		} {
+			
+			args .second + ".rye" |to-file |load |do\in* test-framework |+ errors ::errors
+		}
+		print "==================="
+		print " FAILED TESTS: " + errors
 	}
-	"doc"  {
+	doc  {
 		for menu { .generate-doc-file menu }
 	}
 	_ { print "use test or doc command" }