qvs can mean two things:
1) It can be an abbreviation for QlikView Server which is a service that publishes QlikView documents so that you can analyze data over Internet.
2) It can be a file extension "QlikView Script file" which is just a plain text file containing a QlikView script. You can create it from inside the script editor (File -> Export to script file) and you can use it using an include command (Insert -> Include statement).
/HIC
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