diff --git a/src/Tiles.s b/src/Tiles.s
index d109938..040465d 100644
--- a/src/Tiles.s
+++ b/src/Tiles.s
@@ -428,22 +428,22 @@ UserHook1        rtl
 ; A = Table proc index
 ;
 ; see TileProcTables in static/TileStore.s
-tblPtr  equ  blttmp
 _SetTileProcs
+:tblPtr  equ  blttmp
 
 ; Multiple the proc index by 6 to get the correct table entry offset
 
                  asl
-                 sta  tblPtr
+                 sta  :tblPtr
                  asl
-                 adc  tblPtr
-                 sta  tblPtr
+                 adc  :tblPtr
+                 sta  :tblPtr
 
 ; Add this offset to the base table address
 
                  tya
-                 adc  tblPtr
-                 sta  tblPtr
+                 adc  :tblPtr
+                 sta  :tblPtr
 
 ; Set the pointer to this bank
 
@@ -451,20 +451,20 @@ _SetTileProcs
                  phk
                  pla
                  and  #$00FF
-                 sta  tblPtr+2
+                 sta  :tblPtr+2
 
 ; Lookup the tile procedures
 
                  ldy  #0
-                 lda  [tblPtr],y
+                 lda  [:tblPtr],y
                  stal K_TS_BASE_TILE_DISP,x
 
                  ldy  #2
-                 lda  [tblPtr],y
+                 lda  [:tblPtr],y
                  stal K_TS_SPRITE_TILE_DISP,x
 
                  ldy  #4
-                 lda  [tblPtr],y
+                 lda  [:tblPtr],y
                  stal K_TS_ONE_SPRITE,x
                  rts
 
diff --git a/src/Tool.s b/src/Tool.s
index cbdd55b..8559852 100644
--- a/src/Tool.s
+++ b/src/Tool.s
@@ -746,6 +746,7 @@ _TSSetOverlay
  
                 _TSExit #0;#8
 
+; UpdateOverlay(top, bottom, proc)
 _TSUpdateOverlay
 :proc           equ     FirstParam+0
 :bottom         equ     FirstParam+4
diff --git a/src/blitter/Template.s b/src/blitter/Template.s
index 227b751..efd33be 100644
--- a/src/blitter/Template.s
+++ b/src/blitter/Template.s
@@ -240,14 +240,14 @@ epilogue_1         tsc
 ;        its passed state, because having the carry bit clear prevents evaluation of
 ;        the V bit.
 ;
-; Version 2: In order to improve performance, especially for two-layer tiles + sprites, the
-;            snippet code was revised to have a fixed structure so that the constant DATA and
-;            MASK values always exist in the same location, regarless of the tile type.  The
-;            tradeoff is that there is a different entry point into the snippet based on the 
-;            tile type, but that is significantly cheaper to lookup and patch into the code
-;            field JMP instruction than it is to rebuild 20+ bytes of code each time.
+; In order to improve performance, especially for two-layer tiles + sprites, the
+; snippet code has a fixed structure so that the constant DATA and MASK values
+; always exist in the same location, regarless of the tile type.  The
+; tradeoff is that there is a different entry point into the snippet based on the 
+; tile type, but that is significantly cheaper to lookup and patch into the code
+; field JMP instruction than it is to rebuild 20+ bytes of code each time.
 ;
-;            There are different snippet templates + offset tables based on the EngineMode
+; There are different snippet templates + offset tables based on the EngineMode
 ;
 ; EngineMode 
 ;
diff --git a/src/render/Dynamic.s b/src/render/Dynamic.s
index 3c9cdf2..228a534 100644
--- a/src/render/Dynamic.s
+++ b/src/render/Dynamic.s
@@ -286,7 +286,7 @@ DynamicOverTwoLyr
 ; tile blitter in the TwoLayer function set sees that a tile is marked as DAMAGED, it must
 ; restore the original code structure before proceeding.
 ;
-; The damages area is not too bad -- just the 10 bytes from [2, 10] are overwritten and must be
+; The damaged area is not too bad -- just the 10 bytes from [2, 10] are overwritten and must be
 ; restored.  This is actually less work than a lot of the snippet macros were doing before 
 ; applying the fixed snippet optimization.
 DynamicUnderTwoLyr