F1: Open Online Help

F3: Batch Select

F4: Switch insertion point when drawing entities

F5: Model Check

F7: Layer Manager

F9: Summary Calculate

F10: View Quantity

F11: View Expression

F12: Element Entity Display Settings

Ctrl+N: New

Ctrl+O: Open

Ctrl+S: Save

Ctrl+Z: Undo

Ctrl+Y: Redo

Ctrl+C: Copy

Ctrl+I: Zoom In

Ctrl+T: Zoom Out

Ctrl+Enter: Top View

Ctrl+3: 3D Dynamic View

Ctrl+5: Full Screen

Del: Delete

Alt+V: Show/Hide Separation Line

Space: Repeat last step

Ctrl+left click: Go back to the previous step when drawing with Line; go back to the start point when drawing with 3-Point Arc

Alt+left click: Quick Find Entity when an element is selected; pick the corresponding element when an entity is selected

F3/Shift+F3: Flip horizontally/vertically when drawing parametric columns; mirror left/right or up/down when drawing prefabricated elements

Shift+F4: Switch insertion point when drawing second point of linear entity 

Point: PO

Line: LI

Rectangle: RE

3-Point Arc: AR

Move: MO

Extend: EX

Enclose: EN

Trim: TR

Split: SP

Align: AL

Current Floor: CF

Adjacent Floors: AF

All Floors: AF

Custom Floors: TF

Show Selected CAD Entity: HS

Hide Selected CAD Entity: HH

Restore Hidden CAD Entity: HR