How to draw You can draw structures consisting of Carbon atoms and single bonds when the Bond button is pressed. To change a single bond to double or triple, select the Bond button and click on the bond once or twice. To change an atom, press an atom button such as B, N, O, F, etc. and then click on the atom. To increase or decrease a charge, select + or - and click on the atom. Red underline means that you made a valence error. Undo and Redo Operations can be reverted with Undo and Redo. | How to delete To delete the selection, press Erase. To delete atoms or bonds one by one, be sure there is no selection, press Erase, click on the atoms/bonds To delete everything in a rectangle, press Erase, press and hold down the mouse button while selecting the rectangle release the button To delete a nonrectangular area, press Erase, click on the mouse button and move the mouse pointer around the fragment click again
Selecting Press the Select button . To select or unselect an atom, click on it. To select a fragment, double click on an atom or bond or it. Lasso selection: Click on the mouse button and move the mouse pointer around the fragment. Click again when you are ready. Rectangle selection: Hold the mouse button down while selecting. To unselect all the atoms, click on the sketchboard somewhere outside the structure. | Moving and Rotating To move an atom, drag it with the mouse in Select mode. To move the selection, move the mouse pointer towards the center until a blue rectangle appears, drag the selection by pressing and holding down the mouse button. To rotate the selection, move the mouse pointer towards the "edge" until a blue gear appears, drag the selection by pressing and holding down the mouse button.
More atom and bond types Press More for periodic table, query atoms, or extra bond types. | Hydrogen labels In the View menu, choose Show Hydrogens to change the way implicit H labels are shown. If you don't have View menu, put the sketcher into a separate window by pressing the top left button (an arrow pointing up).

Template structures

- Templates can be rotated into the desired position before the structure is picked up.
  1. Select a template while holding the mouse button down.
  2. Move the mouse pointer.
  3. Release the mouse button when you find the desired position.
- Joining a structure with a template (click here for pictures).
  - Simplest case
    1. Select the template.
    2. Move it near the structure. Attaching points are signed by circles.
    3. Click.
  - You can rotate the template if there is only one main attaching point.
    1. Select the template.
    2. Move it near the structure. The main attaching point(s) are the big circle(s).
    3. If there is only one main attaching point, press and hold the mouse button.
    4. Rotate the template into the desired position by moving the mouse.
- To choose from another template set:
  - in MarvinSketch/AWT: press the < button right to the template bar
  - in MarvinSketch/Swing: select from the Templates menu

Keyboard shortcuts

- All the elements. For example: N is Nitrogen, C-L is Chlorine.
- Query atom types: * (any atom), Q (heteroatom)
- Bond types: 1, 2, 3, 4 (aromatic), 1-2 (single or double), 1-4 (single or aromatic), 2-4 (double or aromatic), 0 (any)
- Charges: -, +
- Templates: 1-1, 2-2, ... 9-9
- More window (Periodic Table): Ctrl-M
- Undo: Ctrl-Z, Alt-Backspace, Redo: Ctrl-Y
- Clipboard. Copy: Ctrl-C, Cut: Ctrl-X, Paste: Ctrl-C
- File operations (if available). Open: Ctrl-O, Save: Ctrl-S, Print: Ctrl-P