The "Word Wrap" editor option appears to be ON by default, and will not stay turned off.
Whenever a PERL script is opened, word warp mode is on. If you look in Window -> Preferences, it show word wrap as OFF. The only way to REALLY turn it off, though, is to click the checkbox (so it appears to be ON), click "Apply", click the checkbox again to turn it OFF, then click "Apply" or "OK".
However, if you close the window and re-open, word wrap mode is on again, even though if you check the preferences again, the checkbox is NOT checked.
1) For a programming language, word wrap doesn't make much sense, but if it it's going to be there at all, it should default to OFF.
2) If I explicitly set a preference, it should stick.