Apologies as this may  seem very rudimentary but is perhaps not so straighforward to a novice.  We have an existing umbraco site, and recently we've wanted to explore the possibility of adding a "global alert" to appear on every page.  I already know this would involve the creation of a macro and inclusion into the templates.  Where I am sort of struggling is the where and how to globally define the alert message so that it only has to be modified in one place, and pulled into the other pages.  Perhaps just a little nudge in the right direction would be a great help, thank you!