From 709d163e9c1e517037d50d6c42bb5a514ec6f735 Mon Sep 17 00:00:00 2001
From: Stuart Breckenridge <stuart.breckenridge@icloud.com>
Date: Thu, 23 Sep 2021 21:25:25 +0800
Subject: [PATCH] addtional notes in Themes.md

---
 Technotes/Themes.md | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/Technotes/Themes.md b/Technotes/Themes.md
index 741e5e963..387c3cb65 100644
--- a/Technotes/Themes.md
+++ b/Technotes/Themes.md
@@ -1,7 +1,31 @@
 # Themes
 
-## Add Themes Directly to NetNewsWire
-Theme developers: on iOS and macOS, themes can be opened directly in NetNewsWire using the below URL scheme:
+## `.nnwtheme` Structure
+
+An `.nnwtheme` comprises of three files:
+- `Info.plist`
+- `template.html`
+- `stylesheet.css`
+
+### Info.plist
+The `Info.plist` requires the following keys/types:
+
+|Key|Type|Notes|
+|---|---|---|
+|`ThemeIdentifier`|`String`|Unique identifier for the theme, e.g. using reverse domain name.|
+|`Name`|`String`|Theme name|
+|`CreatorHomePage`|`String`||
+|`CreatorName`|`String`||
+|`Version`|`Integer`||
+
+### template.html
+This provides a starting point for editing the structure of the page. Theme variables are documented in the header.
+
+### stylesheet.css
+This provides a starting point for editing the style of the page. 
+
+## Add Themes Directly to NetNewsWire with URL Scheme
+On iOS and macOS, themes can be opened directly in NetNewsWire using the below URL scheme:
 
 `netnewswire://theme/add?url={url}`