View source file structure

Alphabetically: sort the list alphabetically.

Show Variables: show instance and class variables.

Inherited: display all the methods and fields inherited by the current class and accessible from it.

Show Migration Fields: show database fields from db/schema.rb for a currently opened model file.

Navigate with Single Click: navigate to a declaration of the item in the source code when you select the item in the Structure tool window.

Always Select Opened Element: navigate to the item in the Structure tool window when you click the item declaration in the source code.