diff --git a/README.md b/README.md
index 87644a1..aeedf16 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@
 - [Table of contents](#table-of-contents)
 - [About](#about)
 - [Installation](#installation)
+- [How does it work](#how-does-it-work)
 - [How to](#how-to)
   - [How to detect an internal format of .ild file](#how-to-detect-an-internal-format-of-ild-file)
 - [Links](#links)
@@ -32,6 +33,13 @@ Description of the format:
 
 ## Installation
 
+## How does it work
+
+Optimizations:
+
+* Order of objects in the input SVG file is not important — `svg2ild` finds nearest edges after each object.
+* Palette: ?
+
 ## How to
 
 ### How to detect an internal format of .ild file