Command Short Cuts

Command-Click:

Select rotation atom

Command-DoubleClick:
Select torsion atom

Option-Click:

Select atom

Option-DoubleClick:

Display atom info

Control-Click:

Select block

Control-DoubleClick:

Display block info

⌘O
:
Opens a structure file (one at a time).

OptionKey opens a portion of the structure.

ControlKey opens a second structure.
⌘Z, ⌘X, ⌘C, ⌘V
: Usual edit short cuts.
⌘R and ⌘L
:
Rotate Right and Left.
⌘W
:
Wobble.
⌘T
:
Tumble.
⌘+ and ⌘-
:
Zoom In and Out.
⌘S and ⌘/
:
Turn bond clockwise and anticlockwise.

A torsion atom must have been previously selected (⌘ DoubleClick).
⌘Y
: Add a block at the end of a structure of the same type as the last one.
⌘U
: Undo the last block of a structure.
⌘=
:
Move structure to place the rotation atom at the image window center.

OptionKey fits structure to image window.
⌘B
:
Swap rotation axis.
⌘M
:
Swap display mode.

OptionKey reverses the order.
⌘H
:
Show/Hide Hydrogen-bonds.
⌘I
:
Show/Hide Ionic-bonds.
⌘S
:
StepWise/Continuous motion.
⌘2
:
Motion only the second structure (when 2 structures are in memory).

Additional Short Cuts

⌘¨, ⌘Æ ⌘≠ and ⌘Ø are used to change some parameters dynamically.
The function depends on the kind of the FrontMost Window: 

Image window (stereo mode):

⌘¨ and ⌘Æ act on the value of the Stereo Angle.

Image window (if it contains an ED-map):

⌘≠ and ⌘Ø act on the value of the Lower Threshold of the ED-map.

Top and Clash windows:

⌘¨ and ⌘Æ act on the value of the Histogram Sampling Width.

⌘≠ and ⌘Ø act on the value of the Profile Energy Maximum.

Stat, Around and Motiv windows: 

⌘¨ and ⌘Æ act on the value of the Histogram Sampling Width.

⌘≠ and ⌘Ø act on the value of the Histogram Ordinate Maximum.