# What Is On The Runtime Path? All of the plugins, syntax highlighting, language-specific indentation that extend the default behavior of Vim are on the runtime path. If something isn't on Vim's runtime path, then Vim won't know about and as a result will not load it at _runtime_. How do we see what is on the runtime path? The `rtp` option is the shorthand for `runtimepath`. Calling `set` on either of these will show us the list of runtime paths, or at least some of them. ``` :set rtp ``` This will generally be a truncated list if you have a lot of plugins. To be sure you are seeing all of them, use `echo` instead. ``` :echo &rtp ``` See `:h rtp` for more details. h/t Chris Erin