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-rw-r--r--README.md15
1 files changed, 9 insertions, 6 deletions
diff --git a/README.md b/README.md
index 56132726..962dd251 100644
--- a/README.md
+++ b/README.md
@@ -327,12 +327,15 @@ Strings are the only place where a SubX word is allowed to contain spaces.
 
 That should be enough information for writing SubX programs. The `apps/`
 directory provides some fodder for practice in the `apps/ex*.subx` files,
-giving a more gradual introduction to SubX features. This repo includes
-binaries for all examples. At any commit, an example's binary should be
-identical bit for bit with the result of translating the corresponding `.subx`
-file. The binary should also be natively runnable on a Linux system running on
-Intel x86 processors, either 32- or 64-bit. If either of these invariants is
-broken it's a bug on my part.
+giving a more gradual introduction to SubX features. In particular, you should
+work through `apps/factorial4.subx`, which demonstrates all the above ideas in
+concert.
+
+This repo includes binaries for all examples. At any commit, an example's
+binary should be identical bit for bit with the result of translating the
+corresponding `.subx` file. The binary should also be natively runnable on a
+Linux system running on Intel x86 processors, either 32- or 64-bit. If either
+of these invariants is broken it's a bug on my part.
 
 ## Running