Working with entities
Place cursor on the worksheet at a desired place. Next created entity will be placed there.
To move entity to another place (on mobile versions) first select entity by clicking on it, then tap in the desired place and hold your finger little bit (long tap). Click on the entity one more time to deselect it.
To delete entity first select it, then press "delete" button on the toolbar (button with "recycle bin" icon). You can select multiple entities.
To delete all created entities and clear your worksheet go to navigation bar, then select "Workspace content" activity and press "reset" button.
There is no "undo" operation available in Dysolve. To correct wrong entity simply redefine it. Use "UP" and "DOWN" buttons on toolbar to list your previous inputs: