⌘/Ctrl + 1 = Open Transition Words Panel
⌘/Ctrl + 2 = Open Thesaurus Panel
⌘/Ctrl + 3 = Open Proofreading Panel
⌘/Ctrl + 5 = Open Time Machine Panel
⌘/Ctrl + 6 = Open Statistics Panel
⌘/Ctrl + 7 = Open File Panel
⌘/Ctrl + 8 = Open Options Panel