Editing

Execution, Debugging & Compilation

Code Completion 

Surround with (Alt+Ctrl+T)

Introduce variable (Alt+Ctrl+V)

Inline variable (Alt+Ctrl+N)

Rename (Shift+F6)

Renames

Structure view

Shows

founded in groovy file

File structure (Ctrl+F12)

Find usage (Alt+F7)

Parameter Info (Ctrl+F12)

Class search (Ctrl+N)

Imports Optimization (Alt+Ctrl+O)

Builders support

Grails