diff --git a/src/modules/bubble.js b/src/modules/bubble.js
index c3e508a22e37e774630c1d31c88006903b291053..e70f8936520557b2db72b362b8567661c9e1a284 100644
--- a/src/modules/bubble.js
+++ b/src/modules/bubble.js
@@ -7,8 +7,8 @@ loadData().then(([schengenData1, countryData]) => {
     const countryMap = {};
     countryData.forEach(d => {
         countryMap[d.Country] = {
-            gdp: +d.GDP.replace(/[$,]/g, ''), // Parse GDP
-            population: +d.Population.replace(/[$,]/g, '') // Parse population
+            gdp: +d.GDP.replace(/[$,]/g, ''),
+            population: +d.Population.replace(/[$,]/g, '')
         };
     });
 
@@ -22,7 +22,6 @@ loadData().then(([schengenData1, countryData]) => {
     let sizeDim;
     let opacityDim;
 
-    // Append SVG container
     const svg = addSvg("#bubble-container", 0, 115)
 
     function updateBubble() {
@@ -62,7 +61,6 @@ loadData().then(([schengenData1, countryData]) => {
             .domain([0, d3.max(schengenData, d => d["opacity"] || 1)])
             .range([0.1, 1]);
 
-        //const colorScale = d3.scaleOrdinal(d3.schemeCategory10);
         const colorScale = d3
             .scaleOrdinal()
             .domain(schengenData)
@@ -70,7 +68,6 @@ loadData().then(([schengenData1, countryData]) => {
 
         svg.selectAll("*").remove();
 
-        // Add X axis
         svg.append("g")
             .attr("transform", `translate(0,${height-margin.top-margin.bottom})`)
             .call(d3.axisBottom(xScale).ticks(10, ".1s"))
@@ -80,7 +77,6 @@ loadData().then(([schengenData1, countryData]) => {
             .text("GDP")
             .style("fill", "black");
 
-        // Add Y axis
         svg.append("g")
             .call(d3.axisLeft(yScale))
             .append("text")
@@ -91,7 +87,6 @@ loadData().then(([schengenData1, countryData]) => {
             .text("Population")
             .style("fill", "black");
 
-        // Draw bubbles
         const tooltip = d3.select("body")
             .append("div")
             .attr("class", "tooltip")
diff --git a/src/modules/main.js b/src/modules/main.js
index 8bc0332ad72a6dda8924a683cc0d2e2a0a139d4a..035eb11f0f6732412ab458d09c8a09b7c3bb5402 100644
--- a/src/modules/main.js
+++ b/src/modules/main.js
@@ -1,11 +1,9 @@
 import {getDimensions, initNavigation, loadData} from "./lib.js";
 
 window.addEventListener('load', () => {
-    // navigation
     initNavigation()
 
-
-    //data filter buttons
+    //fill dropdowns with dimensions
     const selectors = Array.from(document.querySelectorAll('.visa-type-autofill'));
     console.log(selectors);
     loadData().then(([schengenCsv, countryCsv])=>{
diff --git a/src/modules/parallel.js b/src/modules/parallel.js
index a4c8b4e92f93aa9f59de38f2784bd78e333d3eee..e723d46c4a53a38f2087d6415f7954c4451031f2 100644
--- a/src/modules/parallel.js
+++ b/src/modules/parallel.js
@@ -1,4 +1,4 @@
-import {addSvg, width, height as _height, margin, colors, getDimensions, loadData} from "./lib.js";
+import {addSvg, width, height as _height, margin, getDimensions, loadData} from "./lib.js";
 
 const height = _height-120
 
@@ -6,20 +6,16 @@ const svg = addSvg("#parallel-coordinates-container", 0, 60)
 
 const loadingIndicator = d3.select("#loading");
 
-// Show loading indicator
 function showLoading() {
     loadingIndicator.style("display", "block");
 }
 
-// Hide loading indicator
 function hideLoading() {
     loadingIndicator.style("display", "none");
 }
 
-// Load data
 showLoading();
 loadData().then(([data,_]) => {
-    // Parse data
     data.forEach(d => {
         for (const key in d) {
             if (!isNaN(+d[key])) {
@@ -48,13 +44,11 @@ loadData().then(([data,_]) => {
     const lineGenerator = d3.line()
         .defined(d => !isNaN(d[1]))
         .x(d => xScale(d[0]))
-        .y(d => yScales[d[0]](d[1] + epsilon)); // epsilon to avoid log(0)
+        .y(d => yScales[d[0]](d[1] + epsilon));
 
-    // Group data by state
     const groupedData = d3.group(data, d => d["Schengen State"]);
     const states = Array.from(groupedData.keys());
 
-    // Populate dropdown
     const dropdown = d3.select("#state-dropdown");
     dropdown.selectAll("option")
         .data(states)
@@ -63,14 +57,12 @@ loadData().then(([data,_]) => {
         .attr("value", d => d)
         .text(d => d);
 
-    // Update plot function
     function updatePlot(state) {
         const filteredData = state ? groupedData.get(state) : data;
 
         const paths = svg.selectAll(".data-line")
             .data(filteredData);
 
-        // Enter and update paths
         paths.enter()
             .append("path")
             .attr("class", "data-line")
@@ -81,27 +73,23 @@ loadData().then(([data,_]) => {
             .style("opacity", 0.05)
             .attr("fill", "none");
 
-
-        // Remove old paths
         paths.exit().remove();
     }
 
     // Initialize with full dataset
     updatePlot(null);
 
-    // Draw axes with labels
     dimensions.forEach(dim => {
         svg.append("g")
             .attr("transform", `translate(${xScale(dim)},0)`)
             .call(d3.axisLeft(yScales[dim]));
 
-        // Use foreignObject for axis labels
         svg.append("foreignObject")
-            .attr("x", xScale(dim) - 30) // Adjust x position
-            .attr("y", height - margin.top - margin.bottom-20) // Adjust y position
-            .attr("width", 60) // Set width for wrapping
-            .attr("height", 140) // Set height for the container
-            .append("xhtml:div") // Add a div for HTML content
+            .attr("x", xScale(dim) - 30)
+            .attr("y", height - margin.top - margin.bottom-20)
+            .attr("width", 60)
+            .attr("height", 140)
+            .append("xhtml:div")
             .style("font-size", "12px")
             .style("text-align", "center")
             .style("word-wrap", "break-word")
diff --git a/src/modules/time-series.js b/src/modules/time-series.js
index 9b9d3c6b7672f41941280faa4142f89ab4996d50..94f71e5dbbe4c13972aa58845f33adf332487213 100644
--- a/src/modules/time-series.js
+++ b/src/modules/time-series.js
@@ -78,6 +78,5 @@ loadData().then(([data,_]) => {
         updateGraph(type);
     });
 
-    // Initialize with "Total  uniform visas issued (including MEV)"
     updateGraph("Total  uniform visas issued (including MEV)");
 });
\ No newline at end of file
diff --git a/src/modules/tree.js b/src/modules/tree.js
index 6c935634c71da424e8916248f0a434e689083096..363da5197cd9ad21af2e9683f3da22829cd4f399 100644
--- a/src/modules/tree.js
+++ b/src/modules/tree.js
@@ -1,4 +1,4 @@
-import {addSvg, width, height, margin, loadData, navigate} from "./lib.js";
+import {addSvg, width, height, loadData, navigate} from "./lib.js";
 
 
 let currentData;
@@ -58,11 +58,10 @@ function updateTree(filterKey) {
                 return match ? +match[1] : 0;
             });
         return d3.scaleSqrt()
-            .domain([0, d3.max(values)]) // Min/Max der Werte
-            .range([5, 40]); // Knotenradius
+            .domain([0, d3.max(values)])
+            .range([5, 40]);
     }
 
-    // Erstelle die Skalierung basierend auf der aktuellen Ebene
     const sizeScale = createSizeScale(root.descendants());
 
     function removeChildren(child) {