diff --git a/pixler.bas b/pixler.bas
index 68a4c72..3fed931 100644
--- a/pixler.bas
+++ b/pixler.bas
@@ -422,7 +422,6 @@ sub canvas
     dim canx as long
     dim cany as long
 
-    ' Add half a zoomed pixel block to align the mouse tip to the block center
     canx=int((_mousex-state.offsetx+(state.zoom \ 2))/state.zoom)
     cany=int((_mousey-state.offsety+(state.zoom \ 2))/state.zoom)
 
@@ -442,10 +441,8 @@ sub canvas
         case 2
             do.line state.startx,state.starty,canx,cany,drawcol
         case 3
-            ' Pass current mouse canvas coordinates directly
             do.circle state.startx,state.starty,canx,cany,drawcol
         case 4
-            ' Pass current mouse canvas coordinates directly
             do.fcircle state.startx,state.starty,canx,cany,drawcol
         case 5
             do.box state.startx,state.starty,canx,cany,drawcol