diff --git a/_data/voice.csv b/_data/voice.csv
index 7ae6fe016..5d7ab47cb 100644
--- a/_data/voice.csv
+++ b/_data/voice.csv
@@ -1,3 +1,4 @@
 id,label,description
+mactts,MacOS Text-to-Speech,"The MacOS Text-to-Speech (TTS) service uses the MacOS "say" command for producing spoken text."
 marytts,Mary Text-to-Speech,"The Mary Text-to-Speech (TTS) service is a pure Java implementation of a TTS service, which uses the [MaryTTS](http://mary.dfki.de/) project of DFKI."
 voicerss,VoiceRSS Text-to-Speech,"VoiceRSS is an Internet based TTS service hosted at http://api.voicerss.org."
diff --git a/addons/bindings/dscalarm/readme.md b/addons/bindings/dscalarm/readme.md
index b0a171783..176e48615 100644
--- a/addons/bindings/dscalarm/readme.md
+++ b/addons/bindings/dscalarm/readme.md
@@ -165,7 +165,9 @@ DSC Alarm things support a variety of channels as seen below in the following ta
 <br/>
 0=OFF<br/>
 1=ON<br/>
-2=Flashing<br/></td></tr>    
+2=Flashing<br/></td></tr>
+    <tr><td>keypad_lcd_update</td><td>String</td><td>Text Changes of the IT-100 LCD Menu.</td></tr>
+    <tr><td>keypad_lcd_cursor</td><td>String</td><td>LCD Cursor Position for The IT-100</td></tr>    
 </table>
 
 ## Full Example
diff --git a/addons/io/homekit/readme.md b/addons/io/homekit/readme.md
index 663d799a7..05caf545c 100644
--- a/addons/io/homekit/readme.md
+++ b/addons/io/homekit/readme.md
@@ -45,7 +45,7 @@ A full list of supported accessory types can be found in the table below.
   <td>Lighting</td>
   <td>&nbsp;</td>
   <td>Switch, Dimmer, Color</td>
-  <td>A lightbulb, either switchable or dimmable</td>
+  <td>A lightbulb, switchable, dimmable or rgb</td>
  </tr>
  <tr>
   <td>Switchable</td>
diff --git a/addons/voice/mactts/readme.md b/addons/voice/mactts/readme.md
new file mode 100644
index 000000000..45ea06d5f
--- /dev/null
+++ b/addons/voice/mactts/readme.md
@@ -0,0 +1,48 @@
+---
+layout: documentation
+---
+
+{% include base.html %}
+
+# MacOS Text-to-Speech
+
+## Overview
+
+The MacOS Text-to-Speech (TTS) service uses the MacOS "say" command for producing spoken text.
+
+Obviously, this service only works on a host that is running MacOS.
+
+## Configuration
+
+There is no need to configure anything for this service.
+
+## Voices
+
+It automatically scans all available voices and registers them, see e.g.
+
+```
+> voice voices
+mactts:Alex Alex (en_US)
+mactts:Ioana Ioana (ro_RO)
+mactts:Moira Moira (en_IE)
+mactts:Sara Sara (da_DK)
+mactts:Ellen Ellen (nl_BE)
+mactts:Thomas Thomas (fr_FR)
+mactts:Zosia Zosia (pl_PL)
+mactts:Steffi Steffi (de_DE)
+mactts:Amelie Amelie (fr_CA)
+mactts:Veena Veena (en_IN)
+mactts:Luciana Luciana (pt_BR)
+mactts:Mariska Mariska (hu_HU)
+mactts:Sinji Sin-ji (zh_HK)
+mactts:Markus Markus (de_DE)
+mactts:Zuzana Zuzana (cs_CZ)
+mactts:Kyoko Kyoko (ja_JP)
+mactts:Satu Satu (fi_FI)
+mactts:Yuna Yuna (ko_KR)
+...
+```
+
+## Supported Audio Formats
+
+The MacTTS service produces audio streams using WAV containers and PCM (signed) codec with 16bit depth and 44.1kHz frequency.