diff --git a/tech/.GIF.wiki b/tech/.GIF.wiki
new file mode 100644
index 0000000..bf94155
--- /dev/null
+++ b/tech/.GIF.wiki
@@ -0,0 +1,3 @@
+= .GIF =
+
+A .GIF is a compressed, lossy [[raster_image]] format.
diff --git a/tech/CMYK.wiki b/tech/CMYK.wiki
new file mode 100644
index 0000000..7e9dcb8
--- /dev/null
+++ b/tech/CMYK.wiki
@@ -0,0 +1,5 @@
+= CMKY =
+
+CMYK or Cyan Magenta Yellow, and Key/Black is the color space used by printed
+materials. A printer combines thse 4 physical inks to create different colors.
+This is also called *subtractive mixing*.
diff --git a/tech/RGB.wiki b/tech/RGB.wiki
new file mode 100644
index 0000000..4c3fba7
--- /dev/null
+++ b/tech/RGB.wiki
@@ -0,0 +1,10 @@
+= RGB =
+
+RGB color model is a color model that uses Red Green and Blue light
+combinations in different intensities to create nearly all combinations of
+color.
+
+RGB is used by
+
+* [[.GIF]]
+* [[.PNG]]
diff --git a/tech/graphics.wiki b/tech/graphics.wiki
index d4160c0..40265c8 100644
--- a/tech/graphics.wiki
+++ b/tech/graphics.wiki
@@ -32,18 +32,19 @@ _Here begins the technical stuff_
 
 ==== [[vector_image]] ====
 
-[[.AI]]
-[[.SVG]]
+* [[.AI]]
+* [[.SVG]]
 
 ==== [[raster_image]] ====
 
-[[.PNG]]
-[[.JPEG]]
+* [[.PNG]]
+* [[.JPEG]]
 
 === Colorspaces ===
 
 * [[YUV]]
 * [[RGB]]
+* [[CMYK]]
 
 == Displays ==