Shift+Ctrl+F1 - Create new object

Shift+Ctrl+F2 - Create outline

Shift+Ctrl+F3 – Merge selection

Shift+Ctrl+F5 – Break current object into two

Shift+Ctrl+F6 - Create X reflection

Shift+Ctrl+F7 - Create Y reflection

Shift+Ctrl+F8 – Reflect around helpers

Shift+Ctrl+F9 – Array of objects

Shift+Ctrl+F10 - Create polar array

Ctrl+Alt+P - Create parametric shape, if possible