I had an issue which the vendor support needed messages from the messages log file.
There of course are messages which are frequent and could hide the needed debug messages.
I just needed to filter them out.
cat messages | grep -v "message not wanted" | grep "message repeated" > textfile
Smaller and more succinct detail for the vendor support people.
Legibility could be an issue for some so if you want to be nice; run the file through a conversion:
unix2dos <file> <outputfile>