Which is not to say that some amount of regression testing isn't important, it is, But not with every incremental build.
In addition to this automated regression test suite we also do extensive manual testing as well.
This has enormous advantages: You can automatically generate release notes, assist testers in determining the necessary set of regression tests to run after the nightly build, and so on.
But if there are manual regression tests we will have to be selective.
When you automate generation of PDF, you can begin to use all the techniques of software engineering: version control, abstraction, professional-quality backups, regression tests, and so on.
