Today, the phrase is a relic. Modern CorelDRAW uses certificate pinning and encrypted token validation. You can't block it with a Hosts file anymore. But for a glorious few years, that one line of text was the only thing standing between a designer and a $900 invoice.
But Corel, like every software giant, had a problem: Piracy. To combat this, they implemented an aggressive online activation protocol. Every time you launched CorelDRAW X7, the application would "phone home" to a list of Corel-owned servers (like apps.corel.com , corel.com , and mc.corel.com ). Block Coreldraw X7 Host File
While technically a method of software piracy, it was also a brilliant lesson in networking: showing that a simple text file, created in 1983 for ARPANET, could be used to slay a multi-million dollar software giant’s licensing server. Today, the phrase is a relic