Hi there Noodlers, I've just downloaded this and integrated into my app, it needed a few minor changes for Xcode 10.1, I should probably have posted a patch. Anyway the app that I'm working on is here; http://github.com/silicontrip/pdftracer plug! plug! ;-) and also a compilable version of NoodleLineNumberMarker and NoodleLineNumberView for recent Xcode. Happy Hacking! -- ST