+#### Acceptance Filter Bypass
+
+The `af_bypass` command controls whether the CAN message acceptance filter is
+bypassed for each CAN controller. By default, hardware acceptance filter (AF) is
+enabled in the VI - only previously defined CAN message IDs will be received.
+Send this command with `bypass: true` to force the filters to bypassed.
+
+If `passthrough` mode is also enabled, when the AF is bypassed, the output will
+include all CAN messages received.
+
+**Request**
+
+ { "command": "af_bypass",
+ "bus": 1,
+ "bypass": true
+ }
+
+**Response**
+
+If the bus in the request was valid and the AF mode was changed, the `status`
+field in the response will be `true`. If `false`, the passthrough mode was not
+changed.
+
+ { "command_response": "af_bypass", "status": true}
+
+#### Message Format Control
+
+The `message_format` command determines the format for output data from the VI
+and also the expected format of commands sent to the VI.
+
+Valid formats are `json` and `binary`.
+
+**Request**
+
+ { "command": "message_format",
+ "format": "json"
+ }
+
+**Response**
+
+If the format was changed successfully, the `status` in the response will be
+`true`. The response will be in the original message format, and all subsequent
+messages will be in the new format.
+
+ { "command_response": "message_format", "status": true}
+
+