diff --git a/README.md b/README.md
index 5d6db21..b2a7c35 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,15 @@
 # Wipforth
 
+Wipforth is a simple Forth implementation that runs in the WebAssembly
+virtual machine.  It does I/O via memory-mapped peripherals, which are
+emulated in JavaScript.
+
+- For the Forth kernel, see <wipforth.wat>
+- For the JavaScript emulator, see <emu.js>
+- For the Forth prelude, see <prelude.f>
+- For a description of the peripherals, see the
+  [Peripherals](#Peripherals) section below.
+
 ## Building and Running
 
 To run, first compile the WebAssembly module: