>"These fields are used to added arbitrary HTML to edit and view pages. Edit the default value of these fields and you can easily add custom messages to various screens or otherwise change the look and feel of JIRA. You can also use Velocity templates in these fields which makes your changes easily portable across different JIRA versions."
>sorry ,I unable to undersatnd this discription.
What part of it is a problem? Put something in the default value for the field.