From cc9d19fbb55f505b23a4dcc7283ff4675c81b6e1 Mon Sep 17 00:00:00 2001
From: Caleb Sander <caleb.sander@gmail.com>
Date: Mon, 9 Nov 2020 12:02:49 -0800
Subject: [PATCH] Add notes about special links to Wiki Game spec

---
 specs/wiki-game/wiki-game.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/specs/wiki-game/wiki-game.md b/specs/wiki-game/wiki-game.md
index 36c227a..05d47c9 100644
--- a/specs/wiki-game/wiki-game.md
+++ b/specs/wiki-game/wiki-game.md
@@ -38,6 +38,18 @@ The string that comes before the next `"` character is the article being linked
 The full URL of an article is `https://en.wikipedia.org/wiki/ARTICLE`; for example, the URL for the Unicode article is https://en.wikipedia.org/wiki/Unicode.
 You can use Node.js's [`https.get()`](https://nodejs.org/api/https.html#https_https_get_options_callback) function to make the requests.
 
+There are a few types of links that need special handling:
+- Links to special Wikipedia pages, e.g. `href="/wiki/Template:Latin_alphabet_sidebar"`.
+  You can identify these links by the `:`.
+  They aren't real pages, so you should skip them.
+- Links to sections on the same page, e.g. `href="#History"`.
+  You can identify these links by the `#` at the start of the link.
+  Again, since the link points to the same page, you don't need to follow it.
+- Links to sections on other pages, e.g. `href="/wiki/Article_(grammar)#Indefinite_article"`.
+  You can identify these links by the `#` in the middle of the link.
+  To follow this link, remove the part starting with `#`.
+  In this example, that would be `/wiki/Article_(grammar)`.
+
 ## Implementing the Wikipedia search
 
 The general idea is to start at the source article, follow each link to another Wikipedia article, and stop upon reaching the target article.
-- 
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