Indigo Studio v1 Cheat Sheet by mdn

Quick Add In Place	Alt+Click
Quick Draw in Place	Alt+Drag
Resize Propor­tio­nally	Shift+Drag
Move Freehand	Ctrl+Drag
Move Snapping	Shift+Drag
Z-Axis Up/Down	Ctrl+Up / Down
Z-Axis Top/Bottom	Ctrl+S­hift+Up / Down
X/Y-Axis 10 Pixels	Shift+­Arrow
Group Elements	Ctrl+G
Ungroup Elements	Ctrl+S­hift+G

Select All	Ctrl+A
Select None	Ctrl+S­hift+A
Select Element(s)	Ctrl+Click
Inters­ection Selection	Shift+Drag
Force Inters­ection Selection	Ctrl+Drag
Copy/C­ut/­Paste	Ctrl+C / X / V
Duplicate Selection	Ctrl+D
Delete Selected Elements	Del
Undo/Redo	Ctrl+Z / Y

Zoom 10% In/Out	Ctrl+ +/-/Scroll
Zoom to 100%	Ctrl+1 (No Numpad)
Move Viewport	Space+Drag
Scroll Horizontal	Shift+­Scroll