diff --git a/script.js b/script.js
index d3ea18f..275945e 100644
--- a/script.js
+++ b/script.js
@@ -41,7 +41,8 @@ function generateGrid(size){
 
 // function to handle sketch events
 function sketchHandler(){
-
+  
+  // an abort controller to abort requests (in this case an event)
   let abortController = new AbortController();
 
   // callbacks that can later be referenced to remove respective listeners
@@ -86,4 +87,4 @@ sketchSize.addEventListener('input', (e) => {
 
 // initial grid render (16x16) and attach listeners
 generateGrid(16);
-sketchHandler();
\ No newline at end of file
+sketchHandler();