diff --git a/src/helpfile.h b/src/helpfile.h
index 3ac0c8bf..9869abc5 100644
--- a/src/helpfile.h
+++ b/src/helpfile.h
@@ -1920,6 +1920,7 @@ static const T_Help_table helptable_effects[] =
   HELP_TEXT ("of unique tiles after each analysis.")
   HELP_TEXT ("")
   HELP_TEXT ("")
+//HELP_TEXT ("0----5----0----5----0X---5----0----5----0--X")
   HELP_TITLE("8 BIT")
   HELP_TEXT (" This mode enable constraints of the vintage")
   HELP_TEXT ("8bits computers video modes, such as the ZX")
@@ -1931,6 +1932,41 @@ static const T_Help_table helptable_effects[] =
   HELP_TEXT ("Opens the menu to choose the type of")
   HELP_TEXT ("constraints")
   HELP_TEXT ("")
+  HELP_TEXT ("")
+  HELP_BOLD ("Amstrad CPC Mode5")
+  HELP_TEXT ("This mode works on 5 layers pictures with a")
+  HELP_TEXT ("width multiple of 48.")
+  HELP_TEXT ("- Layer 1 defines INK 0 for the full screen.")
+  HELP_TEXT ("  The whole layer is filled at once.")
+  HELP_TEXT ("- Layer 2 defines INK 1 for each line. Any")
+  HELP_TEXT ("  paint fills a full line in this layer")
+  HELP_TEXT ("- Layer 3 defines INK 2 for each line. Any")
+  HELP_TEXT ("  paint fills a full line in this layer")
+  HELP_TEXT ("- Layer 4 defines INK 3 for 48x1 blocks.")
+  HELP_TEXT ("  A whole block is filled at once.")
+  HELP_TEXT ("- Layer 5 defines which INK is displayed for")
+  HELP_TEXT ("  the pixel. All pixels are addressables.")
+  HELP_TEXT ("")
+  HELP_TEXT ("Layers 1-4 must be filled with CPC Hardware")
+  HELP_TEXT ("colors, ie 64-95 (0x40-0x5F). INKs 0-3 are")
+  HELP_TEXT ("selected in layer 5 with colors 0-3.")
+  HELP_TEXT ("")
+  HELP_TEXT ("")
+  HELP_BOLD ("Amstrad CPC Rasters")
+  HELP_TEXT ("This mode works on 5 layers as Mode5. Layer")
+  HELP_TEXT ("layout and function are the same. The")
+  HELP_TEXT ("difference lies in the fewer constraints in")
+  HELP_TEXT ("INK changes. They need to happen in 32pixels")
+  HELP_TEXT ("or more, at 8 pixels boundaries.")
+  HELP_TEXT ("")
+  HELP_TEXT ("")
+  HELP_BOLD ("Amstrad CPC EGX/EG2")
+  HELP_TEXT ("Theses modes mix lines in mode0/mode1 (EGX)")
+  HELP_TEXT ("and mode1/mode2 (EGX2).")
+  HELP_TEXT ("Odd lines have pixels twice as wide as even")
+  HELP_TEXT ("lines but with twice as much possible colors")
+  HELP_TEXT ("")
+  HELP_TEXT ("")
 };
 static const T_Help_table helptable_text[] =
 {