A good chemical structure editor makes drawing clean structures quick and easy. Adjusting magnification and placement (also known as zooming and panning) are two common operations that often limit drawing speed. Multiplied over the large number of structures chemists often draw in a single day, it's not hard to see how a clunky interface for zooming and panning can be the source of irritation and lost time. This holds especially true for Web applications, in which drawing space is often limited.
|Zoom in||Mouse Wheel Up||Pinch open|
|Zoom out||Mouse Wheel Down||Pinch close|
|Pan||Shift + Mouse Drag||Pinch drag|
|Scale to Fit||u||u|
ChemWriter solves this problem with a unified system for changing the position and magnification of structure drawings.
A full command summary can be found in the ChemWriter User Guide.