diff --git a/README.md b/README.md
index 75e5649..fa0b832 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # merge-by-template
 
-__This module is still a work-in-progress!__ It's already usable in production code, but the documentation is still rough, and its API might still change in the future.
+A library for generating custom deep-merging functions, that merge data structures according to a set of (nested) rules that you specify.
+
+__This module is still a work-in-progress!__ It's already usable in production code, but the documentation is still rough, it may contain the occasional bug, and its API might still change in the future.
 
 ## Example
 
@@ -86,6 +88,8 @@ This section will be expanded in the future.
 
 __The basic principle:__ Regardless of how many values you pass into the custom merging function, it will always merge them per 2. So if you pass in `[ a, b, c ]` then it will first merge `b` onto `a`, and then merge `c` onto the result of the `b -> a` merger. The B side always takes precedence in the default merging strategies.
 
+Rules can be nested __to any depth__ (until you hit the runtime's stack size limit, anyway). This allows merging complex nested data structures.
+
 For now, a quick listing of rule syntax:
 
 - __No rule specified (or explicit `null` or `undefined` specified):__ One value overrides the other in full, even if that value is an object or array.