diff --git a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
index 1760287..8c8dbac 100644
--- a/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
+++ b/Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java
@@ -1,6 +1,5 @@
 package de.hs_mannheim.informatik.spreadsheet;
 
-import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.PrintWriter;
@@ -8,7 +7,6 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Scanner;
 
 
 /**
@@ -36,23 +34,6 @@ public class Spreadsheet {
 			for (int c = 0; c < colWithMax26; c++)
 				cells[r][c] = new Cell();
 	}
-	/**
-	 * Sets a Spreadsheet of size rows * cols.
-	 * @param rows number of rows
-	 * @param cols number of columns
-	 */
-	public void changeSize(int rows, int cols) {
-		cells = new Cell[0][0];
-		
-		int rowWithMax99= Math.min(rows, 99);
-		int colWithMax26= Math.min(cols, 26);
-
-		cells = new Cell[rowWithMax99][colWithMax26];
-
-		for (int r = 0; r < rowWithMax99; r++)
-			for (int c = 0; c < colWithMax26; c++)
-				cells[r][c] = new Cell();
-	}
 
 	// -----
 	/*
@@ -74,7 +55,7 @@ public class Spreadsheet {
 		cellName = cellName.toUpperCase();
 		return get(getRow(cellName), getCol(cellName));
 	}
-	void put(int row, int col, String value) {
+	private void put(int row, int col, String value) {
 		if (!value.startsWith("="))
 			cells[row][col].setValue(value);
 		else {
@@ -105,34 +86,13 @@ public class Spreadsheet {
 	/** 
 	 * A method for reading in data from a CSV file.
 	 * @param path The file to read.
-	 * @param startCellName The upper left cell where data from the CSV file should be inserted.
+	 * @param separator The char used to split up the input, e.g. a comma or a semicolon.
+	 * @param starCellName The upper left cell where data from the CSV file should be inserted.
 	 * @return Nothing.
 	 * @exception IOException If path does not exist.
 	 */
-	public void readCsv(String path, String startCellName) throws FileNotFoundException {
-		Scanner csvIn = new Scanner(new File(path));
-		int index= 0;
-		
-		while(csvIn.hasNextLine()){
-			String line =csvIn.nextLine();
-			String all="";
-			int filled=0;
-			for(int i = 0;i<line.length();i++) {
-				if(line.charAt(i)==',') {
-					if(!all.isBlank()) {
-						put(index,i-filled,all);
-						all="";
-					}
-				}else {
-					filled++;
-					all+=line.charAt(i);
-				}
-				
-			}
-			index++;
-		}
-		
-		csvIn.close();
+	public void readCsv(String path, char separator, String startCellName) throws FileNotFoundException {
+		// TODO: implement this
 	}
 
 	/**
@@ -209,7 +169,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The sum calculated.
 	 */
-	public long sum(String startCellName, String endCellName) {
+	private long sum(String startCellName, String endCellName) {
 		long res = 0;
 		for(int j = getRow(startCellName); j<= (getRow(endCellName));j++){
 			for(int i = getCol(startCellName); i<= (getCol(endCellName));i++) {
@@ -226,7 +186,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The product calculated.
 	 */
-	public long prod(String startCellName, String endCellName) {
+	private long prod(String startCellName, String endCellName) {
 		long res = 1;
 		boolean anyNumbers= false;
 		for(int j = getRow(startCellName); j<= (getRow(endCellName));j++){
@@ -248,7 +208,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The Mid Value calculated.
 	 */
-	public long mid(String startCellName, String endCellName) {
+	private long mid(String startCellName, String endCellName) {
 		long res = 0;
 		int Numbers= 0;
 		for(int j = getRow(startCellName); j<= (getRow(endCellName));j++){
@@ -268,7 +228,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The Standard deviation calculated.
 	 */
-	public long stabw(String startCellName, String endCellName) {
+	private long stabw(String startCellName, String endCellName) {
 		long res=0;
 		long midSum=0;
 		//mid(startCellName,endCellName)
@@ -302,7 +262,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The minimum value calculated.
 	 */
-	public long min(String startCellName, String endCellName) {
+	private long min(String startCellName, String endCellName) {
 		long res = 0;
 		List<Long> args = new ArrayList<>();
 		for(int j = getRow(startCellName); j<= (getRow(endCellName));j++){
@@ -328,7 +288,7 @@ public class Spreadsheet {
 	 * @param endCellName The name of the cell in the lower right corner of the rectangle.
 	 * @return The maximum value calculated.
 	 */
-	public long max(String startCellName, String endCellName) {
+	private long max(String startCellName, String endCellName) {
 		long res = 0;
 		List<Long> args = new ArrayList<>();
 		for(int j = getRow(startCellName); j<= (getRow(endCellName));j++){