Velocity is a server-side template language used by Confluence to render page content. Velocity allows Java objects to be called alongside standard HTML.
If you are are writing a user macro or developing a plugin you may need to modify Velocity content.
A variable in velocity looks like this:
1$foo
To set a variable:
1#set ($message = "Hello")
A basic if statement:
1 2 3#if ($message == "Hello") Message received and is "Hello" #end
A velocity variable which evaluates to null will simply render as the variable name.
See the Velocity user guide for a more comprehensive introduction to Velocity.
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