Using this setting the Insert Reaction Arrow button has dual function: when you click with it, it places a + sign, when you drag it, puts a reaction arrow. Accordingly

To place a reaction arrow

• • Select the Insert Reaction Arrow button. You will see the reaction arrow on the tip of the cursor when you move the mouse into the canvas area.

  • Click the location of the tail of the arrow.

  • Drag the mouse and release at the location of the head.

To place a +

• • Select the Insert Reaction Arrow button.

  • Click on the canvas.

You can place reaction arrows/plus signs on the canvas at any time, even on a blank canvas.

Align/distribute

You can align and/or distribute the objects of the reaction scheme by selecting the relevant option in Edit > Object menu.

The centers of the objects will be considered during the alignment/distribution of objects. Note that selected agent fragments and texts are moved together with the arrow while keeping the distance between them.