How can I hide this horizontal ruler (outlined in red) along the top of my (Fortran) source code? Looks like it might be related to printer settings, but I can't find anything.
Using Eclipse Photon Milestone 5 (4.8.0M5) on Ubuntu 17.10.
In Window > Preferences: Fortran > Editor uncheck the Enable horizontal ruler check box.
See Fortran Development User Guide - Writing Code, section Configuring The Editor