diff --git a/hardware/unicorn/README.md b/hardware/unicorn/README.md
index 127890e9..02a3691f 100644
--- a/hardware/unicorn/README.md
+++ b/hardware/unicorn/README.md
@@ -8,8 +8,8 @@ Pre-requisites
 --------------
 
 The Unicorn HAT python drivers need to be pre-installed... see the
-<a "href=http://learn.pimoroni.com/tutorial/unicorn-hat/getting-started-with-unicorn-hat">
-Pimorini Getting Started with Unicorn HAT</a> page.
+<a href="http://learn.pimoroni.com/tutorial/unicorn-hat/getting-started-with-unicorn-hat" target="_new">
+Pimoroni Getting Started with Unicorn HAT</a> page.
 
     curl -sS get.pimoroni.com/unicornhat | bash
 
@@ -27,17 +27,20 @@ Usage
 The background of the array can be configured using an 8x8 pixel sized
 png image, or by specifying a single colour using an r,g,b triple.
 
-The brightness can also be set in the configuration. Defaults to 20% so as not to blind you.
+The brightness can also be set in the configuration. Defaults to 20% so as not
+to blind you.
 
-A pixel is set by **msg.payload** with a CSV string `x,y,r,g,b` , where x and y are 0 to 7, and r, g and b are 0 - 255.
+A pixel is set by **msg.payload** with a CSV string `x,y,r,g,b` , where x and y
+are 0 to 7, and r, g and b are 0 - 255.
 If `x` or `y` are set to `*` then the complete row or column can be set.
 Setting both `x` and `y` to `*` fills the background.
 
 The background can also be set to a colour by setting **msg.payload** to an r,g,b triple.
 
-Any msg with a **msg.topic** identifies a 'sprite' pixel, which can then be moved independently of the background.
+Any msg with a **msg.topic** identifies a 'sprite' pixel, which can then be moved
+independently of the background. A 'sprite' can be a single pixel or a complete line.
 
-Setting **msg.payload** to `0` will delete the sprite from the list.
+Setting **msg.payload** to `0` will delete the sprite from the list identified by **msg.topic**.
 
 Setting **msg.payload** to `DEL` delete any sprites - leaving the background.
 
@@ -45,4 +48,4 @@ Setting **msg.payload** to `CLS` will clear the display to off and delete any sp
 
 The overall brightness may be set by setting **msg.payload** to `brightness,nn`, where `nn` is 0 to 100.
 
-The rotation may be set by setting ••msg.payload•• to 'rotate,rr', where 'rr' is 0, 90, 180 or 270.</p>
+The rotation may be set by setting ••msg.payload•• to 'rotate,rr', where 'rr' is 0, 90, 180 or 270.
diff --git a/hardware/unicorn/package.json b/hardware/unicorn/package.json
index caf16680..6359f866 100644
--- a/hardware/unicorn/package.json
+++ b/hardware/unicorn/package.json
@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pi-unicorn-hat",
-    "version"       : "0.0.1",
+    "version"       : "0.0.2",
     "description"   : "A Node-RED node to output to a Raspberry Pi Unicorn HAT from Pimorini.",
     "dependencies"  : {
         "pngjs": "2.2.*"
diff --git a/hardware/unicorn/unicorn.html b/hardware/unicorn/unicorn.html
index 9007f53a..d2274224 100644
--- a/hardware/unicorn/unicorn.html
+++ b/hardware/unicorn/unicorn.html
@@ -37,7 +37,8 @@
     <p>A pixel is set by <b>msg.payload</b> with a CSV string <i>x,y,r,g,b</i> .
     If x or y are set to * then the complete row or column can be set.</p>
     <p>The background can be set to a colour by setting msg.payload to an r,g,b triple.</p>
-    <p>Any msg with a <b>msg.topic</b> identifies a 'sprite' pixel, which can then be moved independently.</p>
+    <p>Any msg with a <b>msg.topic</b> identifies a 'sprite' pixel, which can then
+    be moved independently. A 'sprite' can be a single pixel or a complete row.</p>
     <p>Setting msg.payload to 0 will delete the sprite from the list.</p>
     <p>Setting msg.payload to "CLS" will clear the display to off and delete any sprites.</p>
     <p>Setting msg.payload to "DEL" will delete any sprites, and leave the background.</p>