diff --git a/scripts/brush.js b/scripts/brush.js
index 39717ae..21028ab 100644
--- a/scripts/brush.js
+++ b/scripts/brush.js
@@ -5,7 +5,7 @@ function Brush()
   
   // Commander
   
-  this.command = function(p)
+  this.add = function(p)
   {
     if(p.length > 1){
       var position = new Position(parseInt(p[0]),parseInt(p[1]));
@@ -20,6 +20,11 @@ function Brush()
     this.add_pointer(pointer);
   }
   
+  this.remove = function(p)
+  {
+    this.remove_pointer(new Position(p[0],p[1]));
+  }
+  
   // Pointers
   
   this.pointers = [new Pointer(new Position(0,0))];
@@ -29,6 +34,16 @@ function Brush()
     this.pointers.push(pointer);
   }
   
+  this.remove_pointer = function(target_position)
+  {
+    for (i = 0; i < this.pointers.length; i++) {
+      if(this.pointers[i].offset.is_equal(target_position)){
+        this.pointers.splice(i, 1);
+        break;
+      }
+    }
+  }
+  
   // Draw
   
   this.draw = function(e)
diff --git a/scripts/commander.js b/scripts/commander.js
index 6c53cc9..d8de071 100644
--- a/scripts/commander.js
+++ b/scripts/commander.js
@@ -28,7 +28,11 @@ function Commander(element,element_input)
     // Brush
     if(parts[0] == ":+"){
       parts.shift();
-      brush.command(parts);
+      brush.add(parts);
+    }
+    if(parts[0] == ":-"){
+      parts.shift();
+      brush.remove(parts);
     }
     
     this.hide();
diff --git a/scripts/main.js b/scripts/main.js
index 146f495..87a918a 100644
--- a/scripts/main.js
+++ b/scripts/main.js
@@ -20,11 +20,13 @@ canvas.addEventListener('mouseup', function(e) {
 var keyboard = new Keyboard();
 document.onkeydown = function myFunction(){ keyboard.listen(event); };
 
-/* brush experiments
 var mirror_test = new Pointer();
-mirror_test.mirror = new Position(200,0);
+mirror_test.mirror = new Position(200,10);
 brush.add_pointer(mirror_test);
 
+/* brush experiments
+
+
 var mirror_test2 = new Pointer(new Position(0,10));
 mirror_test2.mirror = new Position(200,0);
 brush.add_pointer(mirror_test2);
diff --git a/scripts/position.js b/scripts/position.js
index 474640e..8207143 100644
--- a/scripts/position.js
+++ b/scripts/position.js
@@ -3,6 +3,12 @@ function Position(x = 0,y = 0)
   this.x = x;
   this.y = y;
   
+  this.is_equal = function(target)
+  {
+    if(target.x == this.x && target.y == this.y){ return true; }
+    return null;
+  }
+
   this.distance_to = function(target)
   {
     if(!target){ return 0; }