| Rectangle Selection | | Allows selection in rectangle mode on mouse drag. |
| Lasso Selection | | Allows selection in lasso mode on mouse drag. |
| Structure Selection | | Allows selection in structure selection mode on mouse drag. With this selection mode, only whole fragments can be selected. |
| Erase | | Removes all structures upon selection. |
| Undo | | Reverses the last command or the last entry you typed. |
| Redo | | Reverses the action of the last undo command. |
| Cut | | Removes and copies the selection to the clipboard. |
| Copy | | Copies the selection to the clipboard. |
| Paste | | Inserts the contents of the clipboard at the location of the cursor, without replacing selection. |
| Check Structure | | Checks and corrects chemical structures. See Structure Checker User's Guide for more information. |
| Zoom In | | Increases the magnification of the canvas. |
| Zoom Out | | Decreases the magnification of the canvas. |
| Zoom Tool | | Changes the magnification of the canvas to a specific value. It can also do autoscale using the following named values: All Selection Scaffold (only when an R-group is defined on the canvas) R-group (only when an R-group is defined on the canvas) |
| Help Contents | | Shows MarvinSketch User's Guide. |
