diff --git a/docs/configuration/module-config/serial.mdx b/docs/configuration/module-config/serial.mdx
index ad724edb..d920edad 100644
--- a/docs/configuration/module-config/serial.mdx
+++ b/docs/configuration/module-config/serial.mdx
@@ -35,6 +35,7 @@ Available Values:
 - `PROTO` Exposes the Protobuf Client API on this serial port. You can use this to connect from another device. [API Reference](/docs/development/device/client-api)
 - `TEXTMSG` Will send the string received over the serial port as a Text Message for Display on the other devices.
 - `NMEA` Will output a NMEA 0183 Data stream containing the internal GPS or fixed position and other node locations as Waypoints (WPL).
+- `CALTOPO` Will output NMEA 0183 Waypoints (WPL) every 10 seconds for all valid node locations, to be consumed by [CalTopo / SARTopo](https://caltopo.com/)
 
 ### Receive GPIO Pin
 
@@ -56,6 +57,10 @@ The serial baud rate.
 
 The amount of time to wait before we consider your packet as "done".
 
+### Override Console Serial Port 
+
+If set to true, this will allow Serial Module to control (set baud rate) and use the primary USB serial bus for output. This is only useful for NMEA and CalTopo modes and may behave strangely or not work at all in other modes. Setting TX/RX pins in the Serial Module config will cause this setting to be ignored.
+
 :::tip
 Once module settings are changed, a **reset** is required for them to take effect.
 :::