diff --git a/cmd/stock/main.go b/cmd/stock/main.go
index 49e7d45..4114567 100644
--- a/cmd/stock/main.go
+++ b/cmd/stock/main.go
@@ -1,4 +1,4 @@
-// The cmd binary of the microservice to run
+// Package that containts the cmd binary of the microservice to run it
 package main
 
 import (
@@ -19,11 +19,13 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/runtime"
 )
 
+// Configuration File
 var (
 	configFile string
 	config     *models.Config
 )
 
+// Function to run this go program
 func main() {
 	flag.StringVar(&configFile, "config", "config.conf", "path of configuration file (default:config.conf)")
 	flag.Parse()
diff --git a/contrib/good_availablity.svg b/contrib/good_availablity.svg
index fe2e4a3..0d1d1cb 100644
--- a/contrib/good_availablity.svg
+++ b/contrib/good_availablity.svg
@@ -1,7 +1,8 @@
-<!-- Funktionen: -->
-<!--  process_radius ANZAHL MAXANZAHL RADIUS -->
-<!--  procent ANZAHL MAXANZAHL -->
-<!--   ex. {procent .Count 10}%-->
+<!-- SVG to show the current stock with an traffic light food labeling system -->
+<!-- Used functions -->
+<!--   process_radius ANZAHL MAXANZAHL RADIUS -->
+<!--   procent ANZAHL MAXANZAHL -->
+<!--    ex. {procent .Count 10}%-->
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
     <g class="arcs">
         {{if lt .Count 4}}
diff --git a/hs_master-kss-monolith.iml b/hs_master-kss-monolith.iml
new file mode 100644
index 0000000..079f520
--- /dev/null
+++ b/hs_master-kss-monolith.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="GO_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="Go 1.8" jdkType="Go SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/http/bindapi.go b/http/bindapi.go
index c752122..ccc8625 100644
--- a/http/bindapi.go
+++ b/http/bindapi.go
@@ -1,4 +1,4 @@
-// all api routes of this microservice
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -9,7 +9,7 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/runtime"
 )
 
-// bind all API routes to webserver
+// Function to bind all api routes to the webserver
 func BindAPI(router *goji.Mux) {
 	router.HandleFunc(pat.Get("/api/status"), status)
 	router.HandleFunc(pat.Get("/api/good/:productid"), listGoods)
diff --git a/http/good.go b/http/good.go
index 64507e4..bb10719 100644
--- a/http/good.go
+++ b/http/good.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -13,12 +14,13 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/runtime"
 )
 
+// Function to add goods to the stock
 func addGood(w http.ResponseWriter, r *http.Request) {
 	log := logger.HTTP(r)
 	id, err := strconv.ParseInt(pat.Param(r, "productid"), 10, 64)
 	if err != nil {
-		log.Warn("wrong productid format")
-		http.Error(w, "wrong productid", http.StatusNotAcceptable)
+		log.Warn("false productid format")
+		http.Error(w, "the product id is false", http.StatusNotAcceptable)
 		return
 	}
 	log = log.WithField("productid", id)
@@ -29,8 +31,8 @@ func addGood(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if !ok {
-		log.Warn("wrong product not found")
-		http.Error(w, "wrong product not found", http.StatusNotFound)
+		log.Warn("false product, product not found")
+		http.Error(w, "the product was not found", http.StatusNotFound)
 		return
 	}
 
@@ -41,8 +43,8 @@ func addGood(w http.ResponseWriter, r *http.Request) {
 
 	db := database.Write.Create(&obj)
 	if db.Error != nil {
-		log.Error("database could not write", db.Error)
-		http.Error(w, "was not possible to write", http.StatusInternalServerError)
+		log.Error("database not able to write", db.Error)
+		http.Error(w, "the product could not be written into the database", http.StatusInternalServerError)
 	}
 	lib.Write(w, &obj)
 
diff --git a/http/good_show.go b/http/good_show.go
index fda4c05..4381711 100644
--- a/http/good_show.go
+++ b/http/good_show.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -14,12 +15,13 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/runtime"
 )
 
+// Function to list all goods
 func listGoods(w http.ResponseWriter, r *http.Request) {
 	log := logger.HTTP(r)
 	id, err := strconv.ParseInt(pat.Param(r, "productid"), 10, 64)
 	if err != nil {
 		log.Warn("wrong productid format")
-		http.Error(w, "wrong productid", http.StatusNotAcceptable)
+		http.Error(w, "the productid is false", http.StatusNotAcceptable)
 		return
 	}
 	log = log.WithField("productid", id)
@@ -27,31 +29,32 @@ func listGoods(w http.ResponseWriter, r *http.Request) {
 	result := database.Read.Where("product_id = ?", id).Find(&list)
 	if result.RowsAffected == 0 {
 		log.Warn("no goods found")
-		http.Error(w, "no goods found", http.StatusNotFound)
+		http.Error(w, "no goods found for this product", http.StatusNotFound)
 		return
 	}
 	lib.Write(w, list)
 	log.Info("done")
 }
 
+// Function that counts als available goods for one product
 func getGoodAvailablityCount(w http.ResponseWriter, r *http.Request) (int, *logrus.Entry) {
 	log := logger.HTTP(r)
 	id, err := strconv.ParseInt(pat.Param(r, "productid"), 10, 64)
 	if err != nil {
 		log.Warn("wrong productid format")
-		http.Error(w, "wrong productid", http.StatusNotAcceptable)
+		http.Error(w, "the product id has a false format", http.StatusNotAcceptable)
 		return -1, log
 	}
 	log = log.WithField("productid", id)
 	ok, err := runtime.ProductExists(id)
 	if err != nil {
-		log.Warn("product could not verified on other microservice")
-		http.Error(w, "product could not verified on other microservice", http.StatusGatewayTimeout)
+		log.Warn("product could not verified on the microservice")
+		http.Error(w, "the product could not be verified", http.StatusGatewayTimeout)
 		return -1, log
 	}
 	if !ok {
-		log.Warn("product did not exists anymore")
-		http.Error(w, "product did not exists anymore", http.StatusNotFound)
+		log.Warn("product does not exists anymore")
+		http.Error(w, "the product does not exists anymore", http.StatusNotFound)
 		return -1, log
 	}
 	var count float64
@@ -59,6 +62,7 @@ func getGoodAvailablityCount(w http.ResponseWriter, r *http.Request) (int, *logr
 	return int(count), log
 }
 
+// Function that returns the availability of a good
 func getGoodAvailablity(w http.ResponseWriter, r *http.Request) {
 	count, log := getGoodAvailablityCount(w, r)
 	if count < 0 {
diff --git a/http/good_show_test.go b/http/good_show_test.go
index 1f6c88e..d5ed3ba 100644
--- a/http/good_show_test.go
+++ b/http/good_show_test.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -13,6 +14,7 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/test"
 )
 
+// Function to test listGoods()
 func TestListGood(t *testing.T) {
 	assertion, router := test.Init(t)
 
@@ -37,6 +39,7 @@ func TestListGood(t *testing.T) {
 	test.Close()
 }
 
+// Function to getGoodAvailability() and getGoodAvailabilityCount()
 func TestGetGoodAvailable(t *testing.T) {
 	now := time.Now()
 	assertion, router := test.Init(t)
diff --git a/http/good_temp.go b/http/good_temp.go
index b3dd626..06948af 100644
--- a/http/good_temp.go
+++ b/http/good_temp.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -8,21 +9,25 @@ import (
 	"text/template"
 )
 
-// path to the svg image templaes to show availablity of a given good
+// Path to the svg image template, that shows the availablity  of a given good
+// with a traffic light food labeling system
 var GoodAvailablityTemplate string
 
-func tempProcent(value, max int) int {
+// Function to calculate a percent value from a given value and an maximum value
+func tempPercent(value, max int) int {
 	return value * 100 / max
 }
 
+// Function to calculate a partial radius, depending on a percentage value
 func tempProcessRadius(value, max, radius int) float64 {
 	return (1 - float64(value)/float64(max)) * float64(radius) * 2 * 3.14
 }
 
+// Function to get the SVG, that shows the traffic light food labeling system for a given good
 func getGoodAvailablitySVG(w http.ResponseWriter, count int) {
 
 	t := template.New("some")
-	t = t.Funcs(template.FuncMap{"procent": tempProcent,
+	t = t.Funcs(template.FuncMap{"procent": tempPercent,
 		"process_radius": tempProcessRadius,
 	})
 	buf := bytes.NewBuffer(nil)
diff --git a/http/good_temp_test.go b/http/good_temp_test.go
index 1c685f4..0484c90 100644
--- a/http/good_temp_test.go
+++ b/http/good_temp_test.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -6,9 +7,10 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+// Function to test tempPercent() and tempProcessRadius()
 func TestTempFuncs(t *testing.T) {
 	assert := assert.New(t)
-	resultInt := tempProcent(3, 9)
+	resultInt := tempPercent(3, 9)
 	assert.Equal(33, resultInt)
 
 	// TODO is there a other way to calc this?
diff --git a/http/good_test.go b/http/good_test.go
index 8619d04..ef22a82 100644
--- a/http/good_test.go
+++ b/http/good_test.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -11,6 +12,7 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/test"
 )
 
+// Function to test addGood()
 func TestAddGood(t *testing.T) {
 	assertion, router := test.Init(t)
 
diff --git a/http/status.go b/http/status.go
index 751c702..8a3ad46 100644
--- a/http/status.go
+++ b/http/status.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -9,6 +10,7 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/models"
 )
 
+// Function to get the status of the microservice, the database and the goods
 func status(w http.ResponseWriter, r *http.Request) {
 	log := logger.HTTP(r)
 	var goods []*models.Good
diff --git a/http/status_test.go b/http/status_test.go
index 34f9037..5b5a490 100644
--- a/http/status_test.go
+++ b/http/status_test.go
@@ -1,3 +1,4 @@
+// Package that contains all api routes of this microservice
 package http
 
 import (
@@ -9,6 +10,7 @@ import (
 	"github.com/genofire/hs_master-kss-monolith/test"
 )
 
+// Function to test status()
 func TestStatus(t *testing.T) {
 	assertion, router := test.Init(t)