From 0328272d2a52264f36770d524aaa11b425e34370 Mon Sep 17 00:00:00 2001
From: Joel Kronqvist <joel.kronqvist@iki.fi>
Date: Fri, 15 Aug 2025 22:27:02 +0300
Subject: doc: added help message and a reference to it in README.md

---
 TUTORIAL.md | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'TUTORIAL.md')

diff --git a/TUTORIAL.md b/TUTORIAL.md
index d7bf266..4cf8948 100644
--- a/TUTORIAL.md
+++ b/TUTORIAL.md
@@ -44,6 +44,15 @@ Decimals are truncated in division:
 2 : Int
 ```
 
+Increment and decrement operators are supplied by the
+standard library:
+```console
+> (-- 1)
+0 : Int
+> (++ 1)
+2 : Int
+```
+
 
 Booleans
 --------
@@ -65,6 +74,15 @@ false : Bool
 false : Bool
 ```
 
+If-expressions are provided by the standard library in the
+form `(if [condition] [iftrue] [iffalse])`:
+```console
+> (if true 1 0)
+1 : Int
+> (if false 1 0)
+0 : Int
+```
+
 
 Integer comparisons
 -------------------
@@ -99,7 +117,8 @@ x saved
 ```
 The REPL interprets this as `((let x 1) x)`, which you
 could also type but would make a more cumbersome REPLing
-experience.
+experience (and would make loading definitions from files
+nigh impossible).
 
 Shadowing works as expected:
 ```console
-- 
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