On my editors, the titles of the files are in the same font. However, the selected editor window which has the cursor in has the file title highlighted. When you click on a file in the navigator, then this is the editor window which will now have the selected file in. Also, the file location breadcrumbs have the Xcode logo just to the left highlighted. Sorry but I can't load a screenshot at the moment but hope this helps.

Thank you for your reponse. What I don't understand is why I cannot therefore write let myJSON = myDataFrame.jsonRepresentaion()

Try Lookahead(fieldSeparator, negative: true)

I concur that .split(by: RegexComponent) is the way to go as it accepts RegexComponent rather than .split(separator: Character) which just accepts a single character. Here is an example of a case statement using Regexs. //  does a string start with a word of one or more letters? var possibleWords   = ["word", " text", "1stop", "-spaced", "987-", "987again"] for word in possibleWords {     switch true {     case word.starts(with: /\d{3}-/) :         print("'\(word)' starts with  3-digits and a hyphen.")     case word.starts(with: /\d+/) :         print("'\(word)' starts with digit(s).")     case word.starts(with: /\w+/) :         print("'\(word)' starts with a word.")     case word.starts(with: /\s+/) :         print("'\(word)' starts with a whitespace.")     default:         print("'\(word)' had no Matches")     } } The output from this is 'word' starts with a word. ' text' starts with a whitespace. '1stop' starts with digit(s). '-spaced' had no Matches '987-' starts with  3-digits and a hyphen. '987again' starts with digit(s). Hope this helps Chris

Im going to give this a try: https://blog.eucse.com/how-to-run-macos-monterey-12-beta-in-vmware-fusion/ How to run macOS Monterey (12) Beta in VMware Fusion WRITTEN BYADAM MATTHEWS POSTED ON JUNE 9, 202114 COMMENTS ON HOW TO RUN MACOS MONTEREY (12) BETA IN VMWARE FUSION macOS Monterey was announced on the 7th June, and of course like good Digital Workspace people we were right into testing mode! during initial Fusion testing we were running into some fun errors/delays, which we have worked out and documented here. So if you’re trying to get Monterey working in VMware Fusion and having some issues, read on!