* `quit`: Quits micro.
-* `save`: Saves the current buffer.
+* `save filename?`: Saves the current buffer. If the filename is provided it will
+ 'save as' the filename.
* `replace "search" "value" flags`: This will replace `search` with `value`.
The `flags` are optional.
* `setlocal option value`: sets the option to value locally (only in the current
buffer).
+* `show option`: shows the current value of the given option.
+
+* `eval "expression"`: Evaluates a Lua expression. Note that micro will not
+ print anything so you should use `messenger:Message(...)` to display a
+ value.
+
* `run sh-command`: runs the given shell command in the background. The
command's output will be displayed in one line when it finishes running.