What is the purpose of <h:message/> :

What is the purpose of <h:messages/> :

Can it to be used for JSF debugging to see errors on each phase?

Will it show every error or any JSF errors at every phase? or is it for use ONLY by the app developer to put helpful messages there for the front end to display and use?

I am getting an error during one phase but there are no error messages displayed using <h:messages/> making me think the latter is true or that <h:messages/> is not working. I need to know which.

[512 byte] By [LisaLisaa] at [2007-11-26 15:16:32]