[UML] How to Draw a Scheduler Service in Sequence Diagram

Problem
Assume I have a HeartBeatService and HeartbeatProducerService.
HeartBeatService will call HeartbeatProducerService every 5 seconds to check system is alive or not. 

How to show this kind of scheduler job in sequence diagram.


How-to
You can add a loop combined fragment in sequence diagram, it looks like:

[Astah] How to Change Font Size in Astah?

Problem
How to change font size in Astah?

How-to
Go to Tool => Project => Default Font, you can change font, font style and font size in this dialog.

PS. Font configuration only allow in Professional version, Community version is disallowed.

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