diff --git a/Luminary099/P12.agc b/Luminary099/P12.agc
index a4a58bf..cca91ab 100644
--- a/Luminary099/P12.agc
+++ b/Luminary099/P12.agc
@@ -58,7 +58,7 @@ P12LM		TC	PHASCHNG
 		TS	DVCNTR
 
 		CA	ZERO
-		TS	TRKMKCNT	# SHOW THAT R29 DOWNLINK DATA IS NOT READY.
+		TS	TRKMKCNT	# SHOW THAT R29 DOWNLINK DATA ISN'T READY.
 		CAF	V06N33A
 		TC	BANKCALL	# FLASH TIG
 		CADR	GOFLASH
@@ -86,19 +86,19 @@ P12LMB		DLOAD
 			VATT
 			REFSMMAT
 		VSL1
-		STOVL	V1S		# COMPUTE V1S = VEL(TIG)*2(-7) M/CS.
+		STOVL	V1S		# COMPUTE V1S = VEL(TIG)*2(-7)M/CS.
 			RATT
 		MXV	VSL6
 			REFSMMAT
-		STCALL	R		# COMPUTE R = POS(TIG)*2(-24) M.
-			MUNGRAV		# COMPUTE GDT1/2(TIG)*2(-T)M/CS.
+		STCALL	R		# COMPUTE R = POS(TIG)*2(-24)M.
+			MUNGRAV		# COMPUTE GDT1/2(TIG)*2(-7)M/CS.
 		VLOAD	UNIT
 			R
 		STCALL	UNIT/R/		# COMPUTE UNIT/R/ FOR YCOMP.
 			YCOMP
 		SR	DCOMP
 			5D
-		STODL	XRANGE		# INITIALIZE XRANGE FOR NOUN 76
+		STODL	XRANGE		# INITIALIZE XRANGE FOR NOUN 76.
 			VINJNOM
 		STODL	ZDOTD
 			RDOTDNOM
@@ -136,7 +136,7 @@ NEWLOAD		CAF	V06N76		# FLASH CROSS-RANGE, AND APOLUNE VALUES.
 		STORE	V		# V(TIPOVER) = V(IGN) + 57FPS (UNIT/R/)
 		DOT	SL1
 			UNIT/R/
-		STOVL	RDOT		# RDOT = 2(-7)
+		STOVL	RDOT		# RDOT * 2(-7)
 			UNIT/R/
 		VXV	UNIT
 			QAXIS
@@ -241,5 +241,3 @@ GUIDINIT	STQ	SETPD
 49FPS		2DEC	.149352 B-6	# EXPECTED RDOT AT TIPOVER
 VINJNOM		2DEC	16.7924 B-7	# 5509.5 FPS(APO=30NM WITH RDOT=19.5FPS)
 RDOTDNOM	2DEC	.059436 B-7	# 19.5 FPS
-
-