Set Selection mode on by clicking one of the three available Selection buttons.
Rectangle Selection
Lasso Selection
Stucture Selection
To select a ... | choose | and.. |
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atom | ![]() |
click on it |
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bond | ![]() |
click on the bond that links them |
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rectangular region | ![]() |
click at one corner of the desired region and drag the mouse to the opposite corner. While the mouse button is pressed down, a guide will be displayed to aid you |
non-rectangular region | ![]() |
press the left mouse button to start selecting, and draw the region with your mouse without releasing the mouse button.A blue guide line appears along the selection region. A pink line connects the start and end points. |
fragment | ![]() |
double-click on an atom or bond |
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molecule | ![]() |
click on an atom or bond. |
whole stucture | ![]() |
double-click on any part of it |
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double-click on any part of it |
To unselect all click an empty area of the canvas.
The Invert selection (Ctrl+Shift+I) will change the current selection such that everything previously unselected will now be selected and vice versa. If there is no selection , the entire image area will be selected.