diff --git a/generate.go b/generate.go
index e50a18d..bfacb07 100644
--- a/generate.go
+++ b/generate.go
@@ -187,6 +187,34 @@ func (pb *Files) makeNewSortfile(pf *File) error {
 		*/
 	}
 
+	// make delete()
+	/*
+		for _, msg := range pf.allMsg() {
+			PARENT := msg.Name
+
+			for _, v := range msg.Vars {
+				if !v.HasUnique {
+					continue
+				}
+				funcname := "func (x *" + PARENT + ") Delete" + msg.Name + "By" + v.VarName + "(" + v.VarType + ") bool"
+				log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "", "", funcname)
+				FRUIT := PARENT
+				APPLES := msg.Name
+				APPLE := v.VarName
+				COLOR := v.VarType
+				FUNCNAME := "Delete" + msg.Name + "By" + v.VarName
+
+				var funcdef string
+				if argv.Delete {
+					funcdef = msg.deleteByWithCopy(wSort, FRUIT, APPLES, APPLE, COLOR, FUNCNAME)
+				} else {
+					funcdef = msg.deleteBy(wSort, FRUIT, APPLES, APPLE, COLOR, FUNCNAME)
+				}
+				log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "done", "", funcdef)
+			}
+		}
+	*/
+
 	// add Find() Delete() Append() Insert()
 	log.Printf("      %-2s %20s %20s %20s %20s\n", "", "PARENT STRUCT", "VAR STRUCT TYPE", "VAR NAME", "LOCK")
 	for i, s := range pf.ToSort {
@@ -204,19 +232,43 @@ func (pb *Files) makeNewSortfile(pf *File) error {
 		}
 
 		var ucount int
+		// append() functions
 		for _, v := range msg.Vars {
-			if v.HasUnique {
-				ucount += 1
-				funcname := "func (x *" + PARENT + ") Append" + VARNAME + "By" + v.VarName + "(" + v.VarType + ")"
-				log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "", "", funcname)
+			if v.IsRepeated {
+				continue
 			}
+			if !v.HasUnique {
+				continue
+			}
+			ucount += 1
+			// funcname := "func (x *" + PARENT + ") Append" + VARNAME + "By" + v.VarName + "(" + v.VarType + ")"
+			// log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "", "", funcname)
+			// func (msg *MsgName) addAppendBy(w io.Writer, STRUCT, FUNCNAME, VARNAME, CHILD, COLOR string) string {
+			// func (msg *MsgName) addAppendBy(w io.Writer, STRUCT, FUNCNAME, STRUCTVAR, VARNAME, VARTYPE string) string {
+			FUNCNAME := "Append" + VARNAME + "By" + v.VarName
+			funcdef := msg.addAppendBy(wSort, PARENT, FUNCNAME, VARNAME, v.VarName, s.VarType)
+			log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "done", "", funcdef)
 		}
-		for _, v := range msg.Vars {
-			if v.HasUnique {
+
+		/*
+			// delete() functions
+			for _, v := range msg.Vars {
+				if !v.HasUnique {
+					continue
+				}
 				funcname := "func (x *" + PARENT + ") Delete" + VARNAME + "By" + v.VarName + "(" + v.VarType + ") bool"
 				log.Printf("      %-2s %20s %20s %20s %s %s\n", "", "", "", "", "", funcname)
+				FRUIT := PARENT
+				APPLES := VARNAME
+				APPLE := v.VarName
+				COLOR := s.VarType
+				if argv.Delete {
+					msg.deleteByWithCopy(wSort, FRUIT, APPLES, APPLE, COLOR)
+				} else {
+					msg.deleteBy(wSort, FRUIT, APPLES, APPLE, COLOR)
+				}
 			}
-		}
+		*/
 
 		for _, v := range msg.Vars {
 			if v.HasUnique {
@@ -244,124 +296,9 @@ func (pb *Files) makeNewSortfile(pf *File) error {
 		}
 
 	}
-
-	/*
-		// everything struct used in here needs a sort iterator (but just one)
-		for FRUIT, APPLE := range pf.IterMap {
-			msg := pf.findMsg(FRUIT)
-			if msg == nil {
-				return fmt.Errorf("failed to find struct %s", FRUIT)
-			}
-			log.Printf("Add newIter() message %s\n", FRUIT)
-			newIter(wSort, msg)
-
-			child := pf.findMsg(APPLE)
-			if child == nil {
-				return fmt.Errorf("failed to find struct %s", APPLE)
-			}
-			log.Printf("Add newIter() message %s\n", APPLE)
-			newIter(wSort, child)
-
-			// now add the allKEY() functions
-			msg.newIterAll(wSort, FRUIT, APPLE)
-		}
-	*/
-
-	/*
-		log.Info("START")
-		log.Printf("Add all() FRUIT=%s APPLE=%s\n", FRUIT, APPLE)
-		addAllFunc(w, FRUIT, APPLE, LOCK)
-		log.Printf("Add len() FRUIT=%s APPLES=%s\n", FRUIT, APPLES)
-		addLenFunc(w, FRUIT, APPLES, LOCK)
-		log.Printf("Add selectAll() FRUIT=%s APPLE=%s APPLES=%s\n", FRUIT, APPLE, APPLES)
-		addSelectAll(w, FRUIT, APPLE, APPLES, LOCK)
-		// newIter(w, FRUIT, APPLE, APPLES, LOCK)
-		log.Info("END")
-	*/
-
-	/*
-		return nil
-		pf.newGenerateSort(wSort, pf.Bases)
-		pf.newGenerateSort(wSort, pf.Base)
-	*/
-
-	/*
-		pf.appendUnique(wFind) // Append() enforce no unique keys
-		if argv.Delete {
-			pf.deleteWithCopyFunc(wFind)
-		} else {
-			pf.deleteFunc(wFind)
-		}
-		pf.findFunc(wFind)
-	*/
-
-	/*
-		wFind, _ := os.OpenFile(pf.Filebase+".find.pb.go", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
-		defer wFind.Close()
-		header(wFind, pf)
-		pf.specialBases(wFind)
-
-		// attempt to add sort functions for pf.Base
-		if err := pf.processMessage(pf.Bases, wSort, wFind); err != nil {
-			return err
-		}
-		if err := pf.processMessage(pf.Base, wSort, wFind); err != nil {
-			return err
-		}
-	*/
 	return nil
 }
 
-/*
-func addIterNew(w io.Write, msg *MsgName {
-	var FRUIT string = parent.Name
-	var LOCK string = parent.Lockname
-	newIter(w, FRUIT, APPLE, APPLES, LOCK)
-}
-*/
-
-/*
-func (pf *File) newGenerateSort(w io.Writer, parent *MsgName) error {
-	var FRUIT string = parent.Name
-	var LOCK string = parent.Lockname
-
-	for _, v := range parent.Vars {
-		if !v.IsRepeated {
-			continue
-		}
-		var APPLES string = v.VarName
-		var APPLE string = v.VarType
-		msg := pf.findMsg(APPLE)
-		if msg == nil {
-			return fmt.Errorf("failed to find struct %s", APPLE)
-		}
-		if msg.NeedIter {
-			parent.NeedIter = false
-			// only can run these once for now
-			log.Info("START")
-			log.Printf("Add all() FRUIT=%s APPLE=%s\n", FRUIT, APPLE)
-			// addAllFunc(w, FRUIT, APPLE, LOCK)
-			log.Printf("Add len() FRUIT=%s APPLES=%s\n", FRUIT, APPLES)
-			addLenFunc(w, FRUIT, APPLES, LOCK)
-			log.Printf("Add selectAll() FRUIT=%s APPLE=%s APPLES=%s\n", FRUIT, APPLE, APPLES)
-			addSelectAll(w, FRUIT, APPLE, APPLES, LOCK)
-			// newIter(w, FRUIT, APPLE, APPLES, LOCK)
-			log.Info("END")
-		}
-
-		for _, v := range msg.Vars {
-			if !v.HasSort {
-				continue
-			}
-			var COLOR string = v.VarName
-			newSortBy(w, FRUIT, APPLE, APPLES, COLOR)
-		}
-
-	}
-	return nil
-}
-*/
-
 func (pf *File) findMsg(s string) *MsgName {
 	if pf.Bases.Name == s {
 		return pf.Bases
@@ -396,6 +333,8 @@ func (pf *File) specialBases(wFind io.Writer) {
 
 }
 
+/*
+
 // to simplify being able to read the code, FRUIT, APPLES and APPLE are used
 // FRUIT == the string name of the message in the protobuf file
 // APPLE == the type of the repeated variable
@@ -442,6 +381,7 @@ func (pf *File) processMessage(parent *MsgName, wSort, wFind io.Writer) error {
 	}
 	return nil
 }
+*/
 
 func (parent *MsgName) addFindByMsg(w io.Writer, FRUIT, APPLES, APPLE, LOCK string) {
 	for _, v := range parent.Vars {
@@ -453,6 +393,7 @@ func (parent *MsgName) addFindByMsg(w io.Writer, FRUIT, APPLES, APPLE, LOCK stri
 	}
 }
 
+/*
 func (parent *MsgName) addDeleteByMsg(w io.Writer, FRUIT, APPLES, APPLE string) {
 	// log.Printf("\tDELETE: %s %s for %s\n", APPLES, APPLE, FRUIT)
 	var COLORS []string
@@ -471,6 +412,7 @@ func (parent *MsgName) addDeleteByMsg(w io.Writer, FRUIT, APPLES, APPLE string)
 		}
 	}
 }
+*/
 
 func (parent *MsgName) addInsertByMsg(w io.Writer, FRUIT, APPLES, APPLE string) {
 	// log.Printf("\tINSERT: %s %s for %s\n", APPLES, APPLE, FRUIT)
diff --git a/generateAppend.go b/generateAppend.go
index 5c70316..cd34a4e 100644
--- a/generateAppend.go
+++ b/generateAppend.go
@@ -66,3 +66,29 @@ func (msg *MsgName) appendUniqueCOLOR(w io.Writer, FRUIT, APPLES, APPLE, COLOR s
 	fmt.Fprintln(w, "}")
 	fmt.Fprintln(w, "")
 }
+
+// Unique Append. rejects Append() if value is already defined
+// compares the field 'COLOR' in the STRUCT with VARNAME
+// that's not the right description above, but whatever, you get the idea
+func (msg *MsgName) addAppendBy(w io.Writer, STRUCT, FUNCNAME, STRUCTVAR, VARNAME, VARTYPE string) string {
+	LOCK := msg.getLockname("x")
+
+	funcdef := "func (x *" + STRUCT + ") " + FUNCNAME + "(y *" + VARTYPE + ") bool"
+
+	fmt.Fprintln(w, funcdef, "{")
+	fmt.Fprintln(w, "	"+LOCK+".Lock()")
+	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
+	fmt.Fprintln(w, "")
+	fmt.Fprintln(w, "	for _, p := range x."+STRUCTVAR+" {")
+	fmt.Fprintln(w, "		if p."+VARNAME+" == y."+VARNAME+" {")
+	fmt.Fprintln(w, "			return false")
+	fmt.Fprintln(w, "		}")
+	fmt.Fprintln(w, "	}")
+	fmt.Fprintln(w, "")
+	fmt.Fprintln(w, "	x."+STRUCTVAR+" = append(x."+STRUCTVAR+", y)")
+	fmt.Fprintln(w, "	return true")
+	fmt.Fprintln(w, "}")
+	fmt.Fprintln(w, "")
+
+	return funcdef
+}
diff --git a/generateFind.go b/generateFind.go
index 1174efa..4ab9d10 100644
--- a/generateFind.go
+++ b/generateFind.go
@@ -38,10 +38,10 @@ func generateFindBy(w io.Writer, FRUIT, APPLES, APPLE, COLOR, LOCK string) {
 	fmt.Fprintln(w, "")
 }
 
-func (msg *MsgName) deleteBy(w io.Writer, FRUIT, APPLES, APPLE, COLOR string) {
+func (msg *MsgName) deleteBy(w io.Writer, FRUIT, APPLES, APPLE, COLOR, FUNCNAME string) string {
 	LOCK := msg.getLockname("x")
 
-	fmt.Fprintln(w, "func (x *"+FRUIT+") DeleteBy"+COLOR+"(s string) bool {")
+	fmt.Fprintln(w, "func (x *"+FRUIT+") "+FUNCNAME+"(s string) bool {")
 	fmt.Fprintln(w, "	"+LOCK+".Lock()")
 	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
 	fmt.Fprintln(w, "")
@@ -55,14 +55,16 @@ func (msg *MsgName) deleteBy(w io.Writer, FRUIT, APPLES, APPLE, COLOR string) {
 	fmt.Fprintln(w, "	return false")
 	fmt.Fprintln(w, "}")
 	fmt.Fprintln(w, "")
+
+	return "func (x *" + FRUIT + ") DeleteBy" + COLOR + "(s string) bool {"
 }
 
 // this tries to return the deleted one but is wrong/gives warning if mutex lock is in struct
-func (msg *MsgName) deleteByWithCopy(w io.Writer, FRUIT, APPLES, APPLE, COLOR string) {
+func (msg *MsgName) deleteByWithCopy(w io.Writer, FRUIT, APPLES, APPLE, COLOR, FUNCNAME string) string {
 	LOCK := msg.getLockname("x")
 
 	fmt.Fprintln(w, "// TESTING fails with 'go vet' warning")
-	fmt.Fprintln(w, "func (x *"+FRUIT+") DeleteBy"+COLOR+"(s string) *"+APPLE+" {")
+	fmt.Fprintln(w, "func (x *"+FRUIT+") "+FUNCNAME+"(s string) *"+APPLE+" {")
 	fmt.Fprintln(w, "	"+LOCK+".Lock()")
 	fmt.Fprintln(w, "	defer "+LOCK+".Unlock()")
 	fmt.Fprintln(w, "")
@@ -79,6 +81,8 @@ func (msg *MsgName) deleteByWithCopy(w io.Writer, FRUIT, APPLES, APPLE, COLOR st
 	fmt.Fprintln(w, "	return nil")
 	fmt.Fprintln(w, "}")
 	fmt.Fprintln(w, "")
+
+	return "func (x *" + FRUIT + ") DeleteBy" + COLOR + "(s string) *" + APPLE + " {"
 }
 
 // new 2025 idea. useful? TODO: look at this again in 1y