Activity diagram

(*)

Start and end nodes of the activity diagram.

(*top)

In some cases, this can be used to move the start point to the beginning of the diagram.

-->

defines an activity

-down->

Down arrow (default value)

-right-> or ->

Right arrow

-left->

Arrow to the left

-up->

Arrow up

if, then, else

Keywords for the definition of branches.

Example:

.. uml::

    (*) --> "Initialisation"
    if "a test" then
    -->[true] "An activity"
    --> "Another activity"
    -right-> (*)
    else
    ->[false] "Something else"
    -->[end the processes] (*)
    endif

fork, fork again and end fork or end merge

Keywords for parallel processing.

Example:

.. uml::

   start
   fork
     :action 1;
   fork again
     :action 2;
   end fork
   stop