Lapce has a unique feature called Code Lens. It's a mixture of folding, minimap and code outline, with the content of functions rendered in very small fonts. You can toggle it by
ein Windows and Linux, and
ein macOS. If you've got modal editing enabled, you can also use the spacebar to toggle it in Normal and Visual mode.
It's still a fully editable area that you can edit like a normal editor, with the benefit of easily shifting functions or structs/classes around the file.