diff --git a/docs/.gitignore b/docs/.gitignore
index fb0cdc749..049b04efb 100644
--- a/docs/.gitignore
+++ b/docs/.gitignore
@@ -15,6 +15,7 @@ reference/
 !INSTALL_ANDROID.md
 !MODIFYING.md
 !DEVELOPING.md
+!Raster_Algorithm.md
 
 # MkDocs Config file
 mkdocs.yml
diff --git a/docs/Raster_Algorithm.md b/docs/Raster_Algorithm.md
new file mode 100644
index 000000000..6ebb6df9d
--- /dev/null
+++ b/docs/Raster_Algorithm.md
@@ -0,0 +1 @@
+TODO: add details on how the freetype smooth anti-aliasing rasterizer works