-\fByaboot.conf\fR, or you can specify a full OpenFirmware device
-path. Note: only the first 2000 bytes of this file will be read.
+\fByaboot.conf\fR, or you can specify a full OpenFirmware device path,
+the file may be on any \fByaboot\fR(8) supported filesystem. The message
+file must be plain ASCII text with UNIX newlines. Note: only the
+first 2000 bytes of this file will be read.