What is 'Multi-cursor editing' in Xcode 10 editor. (more information about the same is mentioned in release notes but unable to understand.)
How exactly does it work?
To edit multiple instances of text within different sections of a document, you can use multi-cursor editing. This allows multiple cursors to be placed in different spots so text can be added, modified, or deleted.
its the name of Source Editor, for reference purpose I taken the answer from whats-new-in-xcode10 and Sample link 1 and Sample link 2
The Xcode 10 Source Editor now supports multi-cursor editing allowing you to quickly edit multiple ranges of code at once.
With a source control-enabled project the source editor displays changes made by a developer in the gutter and shows changes made by other developers that haven’t yet been pulled into the project