diff --git a/colorbar-fastloop.py b/colorbar-fastloop.py
index 80de61d..c525d20 100644
--- a/colorbar-fastloop.py
+++ b/colorbar-fastloop.py
@@ -45,7 +45,8 @@ pixels.show()
 #   red and yellow are both set to True depends on how the
 #   colormode is configured.
 def colorizer(pxnum, colormode="fill", yellow=False, red=False):
-    # Every pixel from lowest to currently highest
+    # Fill every pixel from lowest to currently highest with
+    #  the current color.
     if colormode == "fill":
         if red:
             pixels[pxnum] = RED
@@ -53,6 +54,8 @@ def colorizer(pxnum, colormode="fill", yellow=False, red=False):
             pixels[pxnum] = YELLOW
         else:
             pixels[pxnum] = GREEN
+    # Only fill the next pixel with the current color if it's
+    #  currently BLANK
     elif colormode == "candybar":
         if pixels[pxnum] == BLANK:
             if red:
@@ -67,6 +70,7 @@ def colorizer(pxnum, colormode="fill", yellow=False, red=False):
         # Invalid colormodes end up here
         raise Exception("Invalid colormode: " + colormode)
 
+
 # Count down from the given total seconds, using the chosen
 #   colormode (how the colors are filled into each pixel),
 #   and the given yellowtime (seconds before timer has elapsed
@@ -112,7 +116,11 @@ def countdown(
 
             # Do update stuff
 
-            # Calculate the current position
+            # Calculate the current position.
+            #  Takes the percentage of time elapsed, multiplied with
+            #  the total numbers of pixels, and rounded to the nearest
+            #  decimal. This results in a number of pixels proportional
+            #  to the elapsed time
             current_position = round(num_pixels * ((seconds - current_time) / seconds))
 
             # Catch a couple of special cases
@@ -124,7 +132,7 @@ def countdown(
                 # If current_position calls for *all*
                 #  pixels to be lit, and the timer
                 #  hasn't expired yet, don't do anything.
-                #  This should delay the last pixel from
+                #  This will delay the last pixel from
                 #  lighting until the timer has fully elapsed
                 pass
             else:
@@ -132,6 +140,10 @@ def countdown(
                 #   based on the elapsed time
                 for pixel in range(current_position):
                     # Set pixel color stuff
+
+                    # If current_time has gone negative, don't
+                    #  change any pixels, just keep counting for
+                    #  user feedback
                     if current_time < 0:
                         pass
                     elif current_time <= redtime:
@@ -141,14 +153,17 @@ def countdown(
                     else:
                         colorizer(pixel, colormode)
 
-            # Display the result IRL
+            # All the pixels have now been set based on the
+            #  specified colormode, now display the result IRL.
             pixels.show()
 
             # Increment the elapsed time variable
             current_time -= update_interval
 
-            # Massage the current_time seconds count into human-readable minutes:seconds
-            display_time = str(datetime.timedelta(seconds=abs(current_time)))[3:]
+            # Add a negative sign to the output when current_time is negative.
+            #  prettytime() puts the given value through abs() because the way
+            #  datetime.timedelta() represents negative values is kind of a PITA
+            #  to deal with.
             if current_time < 0:
                 display_time_sign = "-"
             else: