diff --git a/maze.tal b/maze.tal
index 0b49d15..b3af832 100644
--- a/maze.tal
+++ b/maze.tal
@@ -376,17 +376,17 @@ RTN
 
 |8000
 
-( 64x40 cells = 2560 bytes
-
-  cell byte layout:
-  * bit 1 -> 1=open, 0=wall
-  * bit 2 -> 1=seen, 0=unseen
-  * bit 3 -> 1=start, 0=not-start
-  * bits 4-5 -> direction to previous link, 0=n 1=e 2=s 3=w
-
-we use the link to support backtracking without
-needing a separate stack.
-)
+( 64x40 cells = 2560 bytes )
+( )
+( cell byte layout: )
+(  * bit    1 -> 1=open, 0=wall )
+(  * bit    2 -> 1=seen, 0=unseen )
+(  * bit    3 -> 1=start, 0=not-start )
+(  * bits 4-5 -> direction to previous link, 0=n 1=e 2=s 3=w )
+(  * bit    6 -> 1=visited 0=unvisited )
+( )
+( we use the link to support backtracking without )
+( needing a separate stack. )
 @maze $2560
 
 ( convenience for less branching when printing hex )