diff --git a/src/builder.js b/src/builder.js
index b9ca1fa..4afb420 100644
--- a/src/builder.js
+++ b/src/builder.js
@@ -93,7 +93,7 @@ const builder = {
       * @param {InputTypes|string} type 
       * @param {Map<string,string>} attr 
       * @param {Modifier} modifier 
-      * @returns {Component}
+      * @returns {InputComponent}
       */
      input: function (type, attr = {}, modifier = null) {
           return new InputComponent(
@@ -109,7 +109,7 @@ const builder = {
       * 
       * @param {Map<string,string>} attr 
       * @param {Modifier} modifier 
-      * @returns {Function<Component>}
+      * @returns {function(Object): InputComponent}
       */
      inputTags: Object.freeze({
           button: function (attr = {}, modifier = null) { return builder.input("button", attr, modifier) },
@@ -172,7 +172,7 @@ const builder = {
       * 
       * @param {Map<string,string>} attr 
       * @param {Modifier} modifier 
-      * @returns {Component}
+      * @returns {InputComponent}
       */
      checkbox: function (attr = {}, modifier = null) { return builder.input({ "type": "checkbox" }, modifier) },
 
@@ -220,7 +220,7 @@ const builder = {
       * 
       * @param {Map<string,string>} attr 
       * @param {Modifier} modifier 
-      * @returns {Component}
+      * @returns {InputComponent}
       */
      textarea: function (attr = {}, modifier = null) {
           return new InputComponent(
diff --git a/src/component.js b/src/component.js
index 97275c8..fca0a36 100644
--- a/src/component.js
+++ b/src/component.js
@@ -126,6 +126,9 @@ class Component extends StyleAndScriptStoringComponent {
     }
 
     /**
+     * Subscribes element under higher_compel group
+     * sets corr. variable true
+     * setAttribute("data-compel-isHCompel", "true")
      * 
      * @returns {Component}
      */
diff --git a/src/context/generalHelpers.js b/src/context/generalHelpers.js
index 522cb3f..1d5d622 100644
--- a/src/context/generalHelpers.js
+++ b/src/context/generalHelpers.js
@@ -78,7 +78,14 @@ class ObjectAccessObject {
 
 }
 
-
+/**
+ * (De-) hides the given element. 
+ * On ensureHidden=true it will be hidden regardless of the current state.
+ * 
+ * @param {HTMLElement} element 
+ * @param {boolean} ensureHidden 
+ * @returns {boolean}
+ */
 function toggleElementVisibility(element, ensureHidden = false) {
     element.classList.toggle("compel-mech-hidden");
 
diff --git a/src/sizeSide/siding.js b/src/sizeSide/siding.js
index 1d5b416..8592518 100644
--- a/src/sizeSide/siding.js
+++ b/src/sizeSide/siding.js
@@ -176,8 +176,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the left side.
-     * @param {number} amount siding for left
-     * @returns {Siding} this Siding Object
+     * @param {number} amount Sides for left
+     * @returns {Sides} this Sides Object
      */
     left(amount) {
         return this.setByIndex(1, amount);
@@ -185,8 +185,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the right side.
-     * @param {number} amount siding for right
-     * @returns {Siding} this Siding Object
+     * @param {number} amount Sides for right
+     * @returns {Sides} this Sides Object
      */
     right(amount) {
         return this.setByIndex(3, amount);
@@ -194,8 +194,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the top side.
-     * @param {number} amount siding for top
-     * @returns {Siding} this Siding Object
+     * @param {number} amount Sides for top
+     * @returns {Sides} this Sides Object
      */
     top(amount) {
         return this.setByIndex(2, amount);
@@ -203,8 +203,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the bottom side.
-     * @param {number} amount siding for bottom
-     * @returns {Siding} this Siding Object
+     * @param {number} amount Sides for bottom
+     * @returns {Sides} this Sides Object
      */
     bottom(amount) {
         return this.setByIndex(4, amount);
@@ -213,8 +213,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the horizontal sides (left and right).
-     * @param {number} amount siding for left and right.
-     * @returns {Sides} this Siding Object
+     * @param {number} amount Sides for left and right.
+     * @returns {Sides} this Sides Object
      */
     horizontal(amount) {
         return this.left(amount).right(amount);
@@ -222,8 +222,8 @@ class Sides extends DirectionUnitDependentAttribute {
 
     /**
      * sets the amount-value for the vertical sides (left and right).
-     * @param {number} amount siding for top and bottom.
-     * @returns {Sides} this Siding Object
+     * @param {number} amount Sides for top and bottom.
+     * @returns {Sides} this Sides Object
      */
     vertical(amount) {
         return this.top(amount).bottom(amount);
@@ -259,12 +259,23 @@ class Sides extends DirectionUnitDependentAttribute {
  * @extends Sides
  */
 class PaddingChain extends Sides {
+    /**
+     * @type {Modifier}
+     */
     _modifier;
+    /**
+     * 
+     * @param {Modifier} modifier 
+     */
     constructor(modifier) {
         super();
         this._modifier = modifier;
     }
 
+    /**
+     * 
+     * @returns {Modifier}
+     */
     toModifier() {
         return this._modifier
             .padding(this);