Add auto sig editor docs

docs/_includes/nav.md

@@ -85,6 +85,7 @@
     - [Node to Node Messaging]({{ site.baseurl }}{% link modding/node-msg.md %})
     - [Top X]({{ site.baseurl }}{% link modding/top-x.md %})
     - [2FA/OTP Config]({{ site.baseurl }}{% link modding/user-2fa-otp-config.md %})
+    - [Auto Signature Editor]({{ site.baseurl }}{% link modding/autosig-edit.md %})
 
   - Administration
     - [oputil]({{ site.baseurl }}{% link admin/oputil.md %})

docs/modding/autosig-edit.md

@@ -0,0 +1,22 @@
+---
+layout: page
+title: Auto Signature Editor
+---
+## The Auto Signature Editor
+The built in `autosig_edit` module allows users to edit their auto signatures (AKA "autosig").
+
+### Theming
+The following MCI codes are available:
+* MCI 1 (ie: `MT1`): Editor
+* MCI 2 (ie: `BT2`): Save button
+
+### Disabling Auto Signatures
+Auto Signature support can be disabled for a particular message area by setting `autoSignatures` to false in the area's configuration block.
+
+Example:
+```hjson
+my_area: {
+    name: My Area
+    autoSignatures: false
+}
+```