> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/ethernet-rov-locator/communicating-with-the-rovl/messages-from-rovl-to-host/usdusinf-usdustxt-information-message.md).

# $USINF/$USTXT Information Message

Note: Except for the $USINF messages listed below, Cerulean Sonar may arbitrarily change the format and content of any $USINF messages at any time.

Example:

`$USINF,Cerulean Sonar RTH ROV Locator*6B`

`$USTXT,Cerulean Sonar RTH ROV Locator*6B`

Format: $USINF,\<message>\*hh

\<message> is free-form text that does not include any asterisks or newlines

All $USINF messages can be safely ignored.