Sometimes, when working with very long files such as report source files (RDLs) or codeunits, it is pretty difficult to know where the pointer should be positioned – or is positioned – within a source file. Visual Studio Code has a full-fledged mini-map feature: a small preview of the source code file. The following is an example of an RDL:

The mini-map feature can be disabled/enabled through View | Toggle Minimap, or by running the Command Palette (Ctrl + Shift + P) and selecting View: Toggle Minimap.