Introduction

A transition provides the condition through which the checks of one or more pre-transition steps pass on one or more consecutive steps along the corresponding link.

Transitions can be placed in any free cell.

If a transition is placed in a cell that is already occupied by an object, an error message is returned.

If a transition is placed in a cell where the neighboring cell above or below already contains a transition, an error message is returned because a step must be placed between two transitions (see also section Connection rules in the Reference manual).

A transition which is placed always connects automatically with the neighboring objects above and below if there are no free cells between them.

Activating transition placement mode

You have the following options to activate the transition placement mode:

  • Use the Edit > New > Transition menu command.

  • Use the Transition menu command from the shortcut menu.

  • Press the Shift+F3 key combination.

    or

  • Select the symbol.

The active transition placement mode is indicated by the cursor symbol.

Note

In the Tools > Options dialog box on the Data and Languages tab, if the Automatically assign a variable to a new graphical object check box is selected, then the corresponding properties dialog box is automatically opened when an object is placed. The procedures explained here are used when the check box is cleared.

Placing transitions

Placing transitions:

Step

Action

1

Activate the transition placement mode.

2

Click the target cell in the SFC section.

or

Use the arrow keys to move the cursor to the target position, and press Enter.

Result: The transition is inserted and the selection mode is active again.

3

To insert further transitions:

  • Click the target cell in the SFC section.

    or

    Use the arrow keys to move the cursor to the target position, and press Enter.

  • To return to selection mode:

    Press the Esc key.

  • To insert other objects:

    Select the object you wish to insert.