diff --git a/src/inputHandler.c b/src/inputHandler.c
index 32de687..7b529c5 100644
--- a/src/inputHandler.c
+++ b/src/inputHandler.c
@@ -1,5 +1,8 @@
 #include "inputHandler.h"
 
+/**
+ * Moves the camera in a somewhat smooth motion.
+ */
 void handleCameraTravel()
 {
     if (cameraTraveling)
@@ -16,6 +19,9 @@ void handleCameraTravel()
     }
 }
 
+/**
+ * Sets the position of the camera while moving.
+ */
 void travelCamera(vec3 newPosition)
 {
     cameraTravelPosition = newPosition;
@@ -54,10 +60,6 @@ void handleInputs(double deltaTime)
     {
         travelCamera((vec3){3.574698f, 0.966039f, 3.852249f});
     }
-    if (glfwGetKey(window, GLFW_KEY_7) == GLFW_PRESS)
-    {
-        travelCamera((vec3){0.324839f, 1.325346f, 3.798471f});
-    }
     if (!cameraTraveling)
     {
         if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
@@ -178,7 +180,9 @@ void handleInputs(double deltaTime)
     }
 }
 
-// input handler to quit with ESC
+/**
+ * Function for if you wanna escape the program.
+ */
 void keyboardHandler(GLFWwindow *window, int key, int scancode, int action, int mods)
 {
     assert(window != NULL);
diff --git a/src/matrixMath.c b/src/matrixMath.c
index b8debd1..62568cb 100644
--- a/src/matrixMath.c
+++ b/src/matrixMath.c
@@ -1,10 +1,4 @@
-#include <math.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <GL/glew.h>
-#include <string.h>
 
-#include <assert.h>
 #include "matrixMath.h"
 
 // MATRICES IN COLUMN MAJOR
@@ -90,10 +84,9 @@ void vec3Normalise(vec3* out, vec3* a) {
 }
 
 /*
-	mat4 functions
+	mat4 functions (tested)
 */
 
-//tested
 // CREATE 4x4 IDENTITY MATRIX
 void identity(mat4* out) {
 	assert(out != NULL);
@@ -103,7 +96,6 @@ void identity(mat4* out) {
 	}
 }
 
-//tested
 // CREATE 4x4 TRANSLATION MATRIX
 void translation(mat4* out, vec3* v) {
 	assert(out != NULL);
@@ -114,7 +106,6 @@ void translation(mat4* out, vec3* v) {
 	out->m23 = v->z;
 }
 
-//tested
 // CREATE 4x4 SCALING MATRIX
 void scaling(mat4* out, vec3* v) {
 	assert(out != NULL);
@@ -186,7 +177,6 @@ void multiplyAny(GLfloat* out, GLfloat* A, GLfloat* B, int wA, int hA, int wB) {
 	result = NULL;
 }
 
-//tested
 // MULTIPLY TWO 4x4 MATRICES
 void multiply(mat4* out, mat4* A, mat4* B) {
 	assert(out != NULL);
@@ -196,7 +186,6 @@ void multiply(mat4* out, mat4* A, mat4* B) {
 	multiplyAny((GLfloat*)out, (GLfloat*)A, (GLfloat*)B, 4, 4, 4);
 }
 
-//!
 // MULTIPLY in WITH TRANSLATION MATRIX OF v
 void translate(mat4* out, mat4* in, vec3* v) {
 	assert(out != NULL);
@@ -208,7 +197,6 @@ void translate(mat4* out, mat4* in, vec3* v) {
 	multiply(out, &translationMatrix, in);
 }
 
-//!
 // MULTIPLY in WITH SCALING MATRIX OF v
 void scale(mat4* out, mat4* in, vec3* v) {
 	assert(out != NULL);
@@ -220,7 +208,6 @@ void scale(mat4* out, mat4* in, vec3* v) {
 	multiply(out, &scalingMatrix, in);
 }
 
-//!
 // MULTIPLY in WITH ROTATION MATRIX OF angle AROUND Z AXIS
 void rotateZ(mat4* out, mat4* in, GLfloat angle) {
 	assert(out != NULL);
@@ -231,7 +218,6 @@ void rotateZ(mat4* out, mat4* in, GLfloat angle) {
 	multiply(out, &rotationMatrix, in);
 }
 
-//!
 // MULTIPLY in WITH ROTATION MATRIX OF angle AROUND Y AXIS
 void rotateY(mat4* out, mat4* in, GLfloat angle) {
 	assert(out != NULL);
@@ -242,7 +228,6 @@ void rotateY(mat4* out, mat4* in, GLfloat angle) {
 	multiply(out, &rotationMatrix, in);
 }
 
-//!
 // MULTIPLY in WITH ROTATION MATRIX OF angle AROUND X AXIS
 void rotateX(mat4* out, mat4* in, GLfloat angle) {
 	assert(out != NULL);
@@ -253,7 +238,6 @@ void rotateX(mat4* out, mat4* in, GLfloat angle) {
 	multiply(out, &rotationMatrix, in);
 }
 
-//tested
 // TRANSPOSE MATRIX OF ANY SIZE
 void transposeAny(GLfloat* out, GLfloat* in, int w, int h) {
 	assert(out != NULL);
@@ -271,7 +255,6 @@ void transposeAny(GLfloat* out, GLfloat* in, int w, int h) {
 	result = NULL;
 }
 
-//tested, da transpose any schon getestet ist
 // TRANSPOSE 4x4 MATRIX
 void transpose(mat4* out, mat4* in) {
 	assert(out != NULL);
@@ -315,7 +298,7 @@ void mat3Print(mat3* m) {
 }
 
 /*
-	mat3 functions
+	mat3 functions (tested)
 */
 
 // TURN mat4 INTO mat3 BY CUTTING LAST COLUMN AND ROW
@@ -328,7 +311,6 @@ void mat3From4(mat3* out, mat4* in) {
 	memcpy(&out->m02, &in->m02, sizeof(vec3));
 }
 
-//tested
 // TRANSPOSE 3x3 MATRIX
 void mat3Transpose(mat3* out, mat3* in) {
 	assert(out != NULL);
@@ -337,7 +319,6 @@ void mat3Transpose(mat3* out, mat3* in) {
 	transposeAny((GLfloat*)out, (GLfloat*)in, 3, 3);
 }
 
-//tested
 /**
  *  a - m00   b - m01   c - m02
  *  d - m10   e - m11   f - m12
@@ -365,7 +346,6 @@ void mat3Minor(mat3* out, mat3* in) {
 	memcpy(out, &result, sizeof(mat3));
 }
 
-//tested
 // GET THE COFACTOR MATRIX OF A 3x3 MATRIX
 void mat3Cofactor(mat3* out, mat3* in) {
 	assert(out != NULL);
@@ -380,7 +360,6 @@ void mat3Cofactor(mat3* out, mat3* in) {
 	out->m12 *= -1;
 }
 
-//tested
 // GET ADJOING MATRRIX OF 3x3 MATRIX
 void mat3Adjoint(mat3* out, mat3* in) {
 	assert(out != NULL);
@@ -400,7 +379,6 @@ void mat3MultiplyScalar(mat3* out, mat3* in, GLfloat x) {
 	}
 }
 
-//tested
 // CALCULATE DETERMINANT OF 3x3 MATRIX
 GLfloat mat3Determinant(mat3* M) {
 	assert(M != NULL);
@@ -416,7 +394,6 @@ GLfloat mat3Determinant(mat3* M) {
 	;
 }
 
-//tested
 // GET INVERSE OF 3x3 MATRIX
 void mat3Inverse(mat3* out, mat3* in) {
 	assert(out != NULL);
@@ -429,7 +406,6 @@ void mat3Inverse(mat3* out, mat3* in) {
 	memcpy(out, &result, sizeof(mat3));
 }
 
-//tested
 // GET THE SUM OF DIFFERENCES BETWEEN TWO MATRICES
 GLfloat sumDiffAny(GLfloat* A, GLfloat* B, int w, int h) {
 	assert(A != NULL);
@@ -442,7 +418,6 @@ GLfloat sumDiffAny(GLfloat* A, GLfloat* B, int w, int h) {
 	return result;
 }
 
-//tested
 // GET THE SUM OF DIFFERENCES BETWEEN TWO 3x3 MATRICES
 GLfloat mat3SumDiff(mat3* A, mat3* B) {
 	assert(A != NULL);
diff --git a/src/matrixMath.h b/src/matrixMath.h
index 6b32ac2..4ad783c 100644
--- a/src/matrixMath.h
+++ b/src/matrixMath.h
@@ -2,6 +2,12 @@
 #define MATRIX_MATH
 
 #include <GL/glew.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <assert.h>
 
 typedef struct {
 	GLfloat x;
diff --git a/src/objectHandler.c b/src/objectHandler.c
index 3c54b53..272ccc0 100644
--- a/src/objectHandler.c
+++ b/src/objectHandler.c
@@ -1,9 +1,4 @@
 #include "objectHandler.h"
-#include "wavefrontobj.h"
-#include <GL/glew.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <assert.h>
 
 /**
  * Loads an object.
@@ -75,6 +70,7 @@ void load_object(ObjectData* objectData) {
 /**
  * Takes a string-pointer, a number of files to read and a number to store the added objects to
  * Returns an array of objects.
+ * The increasing count would be used in the main.c.
 */
 ObjectData* readObjFiles(char** path, int numModels, int* count) {
 	assert(path != NULL);
diff --git a/src/objectHandler.h b/src/objectHandler.h
index efcf724..e180693 100644
--- a/src/objectHandler.h
+++ b/src/objectHandler.h
@@ -1,7 +1,12 @@
 #ifndef OBJECTHANDLER_H
 #define OBJECTHANDLER_H
 
+#include "wavefrontobj.h" 
 #include "wavefrontobj.h"
+#include <GL/glew.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
 
 typedef struct {
     GLuint vao;
diff --git a/src/sceneGraph.c b/src/sceneGraph.c
index ecf3376..06bff09 100644
--- a/src/sceneGraph.c
+++ b/src/sceneGraph.c
@@ -1,12 +1,6 @@
 // sceneGraph.c
 
 #include "sceneGraph.h"
-#include "objectHandler.h"
-#include <stdlib.h>
-#include <math.h>
-#include <stdio.h>
-#include <GL/glew.h>
-#include <stdbool.h>
 
 #define STB_IMAGE_IMPLEMENTATION
 #include "../lib/stb_image.h"
diff --git a/src/sceneGraph.h b/src/sceneGraph.h
index 7af51a6..ac18022 100644
--- a/src/sceneGraph.h
+++ b/src/sceneGraph.h
@@ -7,7 +7,11 @@
 #include "matrixMath.h"
 #include "wavefrontobj.h"
 #include "objectHandler.h"
-
+#include <stdlib.h>
+#include <math.h>
+#include <stdio.h>
+#include <GL/glew.h>
+#include <stdbool.h>
 
 typedef struct SceneNode SceneNode;
 
diff --git a/src/shader.c b/src/shader.c
index e09d8f2..de1ff76 100644
--- a/src/shader.c
+++ b/src/shader.c
@@ -1,9 +1,9 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <GL/glew.h>
 #include "shader.h"
-#include <assert.h>
 
+/**
+ * Compiles shader from shaderSource.
+ * The shader given just needs a shader type to be set beforehand, the rest gets set here.
+ */
 void compileShader(const GLchar *shaderSource, Shader *shader) {
     assert(shaderSource != NULL);
     assert(shader != NULL);
@@ -26,6 +26,9 @@ void compileShader(const GLchar *shaderSource, Shader *shader) {
     }
 }
 
+/**
+ * Compiles multiple shaders. Basically compileShader() for multiple shaders in one go.
+ */
 void compileShaders(Shader* shaders, const GLchar** glslSources, int numShaders) {
     assert(glslSources != NULL);
     assert(shaders != NULL);
@@ -34,6 +37,9 @@ void compileShaders(Shader* shaders, const GLchar** glslSources, int numShaders)
     }
 }
 
+/**
+ * Creates a shaderProgram object.
+ */
 ShaderProgram createShaderProgram(const GLchar* vertexSource, const GLchar* fragmentSource) {
     assert(vertexSource != NULL);
     assert(fragmentSource != NULL);
diff --git a/src/shader.h b/src/shader.h
index cb2beab..1e401be 100644
--- a/src/shader.h
+++ b/src/shader.h
@@ -2,6 +2,9 @@
 #define SHADER_UTIL_H
 
 #include <GL/glew.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
 
 typedef struct {
     GLenum type;
diff --git a/src/transformation.c b/src/transformation.c
index b914ab6..3f5303e 100644
--- a/src/transformation.c
+++ b/src/transformation.c
@@ -1,10 +1,3 @@
-#include <math.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <GL/glew.h>
-#include <string.h>
-
-#include "matrixMath.h"
 #include "transformation.h"
 
 void lookAt(mat4* out, vec3* eye, vec3* look, vec3* up) {
diff --git a/src/transformation.h b/src/transformation.h
index 9bbc03d..6799dbf 100644
--- a/src/transformation.h
+++ b/src/transformation.h
@@ -2,6 +2,12 @@
 #define TRANSFORMATION_H
 
 #include <GL/glew.h>
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "matrixMath.h"
 
 extern void lookAt(mat4* out, vec3* eye, vec3* look, vec3* up);
 extern void perspectiveProjection(mat4* out, GLfloat near, GLfloat far);
diff --git a/src/wavefrontobj.c b/src/wavefrontobj.c
index 7c99811..4ae5a4b 100644
--- a/src/wavefrontobj.c
+++ b/src/wavefrontobj.c
@@ -1,9 +1,3 @@
-#include <GL/glew.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-
 #include "wavefrontobj.h"
 
 #define OBJ_LINE_BUFFER_SIZE 256
diff --git a/src/wavefrontobj.h b/src/wavefrontobj.h
index 61e6873..6a07aee 100644
--- a/src/wavefrontobj.h
+++ b/src/wavefrontobj.h
@@ -2,7 +2,11 @@
 #define WAVEFRONTOBJ_H
 
 #include <GL/glew.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "matrixMath.h"
+#include <sys/types.h>
 
 typedef struct {
 	vec3 position;