General:

(2) - 2D

(3) - 3D

(4 or Ctrl+I) - Issue Tracker

(5) - Docs

(Ctrl+O) - Open project gallery

(Ctrl+Shift+O) - Import project

(Ctrl+E) - Sheets

(Ctrl+Shift+I) - Create a new issue

(Ctrl+Shift+S) - Stamp mode

(Esc) - Close currently opened tool

3D:

(F5) – Sets navigation mode to "Video Game"

(F6) – Sets navigation mode to "Revit"

(F7) - Sets navigation mode to "SketchUp"

(F8) – Sets navigation mode to "Hybrid"

(F9) – Sets navigation mode to "Navisworks Walk"

(R) - Toggles the Fly/Walk modes (if available)

(Ctrl+R) - Rooms

(Ctrl+X) - Section Cut

(Ctrl+B) - Objects

(Ctrl+M) - Ruler

(Home or Ctrl+H) – Home

(Ctrl+F) - Fit 3D View

(Ctrl+T) - Create video track

(Ctrl+W) - Viewpoints

(M) – Opens a map

(Ctrl+click) – Multiple objects selection

(Alt+click) – Teleport

(+) – Increases a field of view

(-) – Decreases a field of view

(0) “zero” – Restores a default field of view

Markup mode:

(P) - Pen

(Q) - Callout

(T) - Text

(L) - Line

(A) - Arrow

(E) - Ellipse

(Shift+P) - Polyline

(R) - Rectangle

(space) or (V) - Edit mode

(Ctrl+C) - Copy markup

(Ctrl+V) - Paste markup

(Ctrl+Z) - Undo

(Ctrl+Shift+Z or Ctrl+Y) - Redo

(Ctrl+Shift+UpArrow) - Bring to front

(Ctrl+UpArrow) - Bring forward

(Ctrl+DownArrow) - Send backward

(Ctrl+Shift+DownArrow) - Send to back