diff --git a/source/Common.h b/source/Common.h
index dc549637..f89db922 100644
--- a/source/Common.h
+++ b/source/Common.h
@@ -8,6 +8,7 @@ const double CLK_6502 = ((_M14 * 65.0) / 912.0); // 65 cycles per 912 14M clocks
 // See: http://www.apple2info.net/hardware/softcard/SC-SWHW_a2in.pdf
 const double CLK_Z80 = (CLK_6502 * 2);
 
+// TODO: Clean up from Common.h, Video.cpp, and NTSC.h !!!
 const UINT uCyclesPerLine			= 65;	// 25 cycles of HBL & 40 cycles of HBL'
 const UINT uVisibleLinesPerFrame	= 64*3;	// 192
 const UINT uLinesPerFrame			= 262;	// 64 in each third of the screen & 70 in VBL