Document Symbols
Document Symbols show the structure of the current file, displaying modules, functions, and other definitions in a hierarchical outline.
Breadcrumbs
Breadcrumbs are the little "trail" you see at the top of the editor window.

Document Outline
The outline shows you the hierarchy of the entire document, and allows you to jump to a specific symbol.

Fuzzy Finding
Many editors allow you to "fuzzy find" the document symbols, similarly to how you would search for a file to open.
This screenshot demonstrates this using the telescope.nvim Neovim plugin.
