{{code language="java"}}
System.out.println("Hello World!");
{{/code}

Radeox macros cannot be used in XWiki Syntax 2.1. Thus they have been rewritten as Rendering macros.

For the full list of available macros check the Extensions wiki.

In XWiki Syntax 2.1 HTML or XHTML must be entered by using the HTML macro.

In XWiki Syntax 2.1, by default the HTML macro does not understands XWiki Syntax (other macros included since it's XWiki Syntax too). To enable it, use {{html wiki="true"}} .

In XWiki Syntax 1.0 it was possible to enter Velocity scripts anywhere directly in the page. This lead to issues for example when the user was involuntarily entering Velocity content. It was also performance hungry for pages not requiring Velocity content. There were several other technical limitations. Thus in XWiki Syntax 2.1 Velocity scripts must be entered using the velocity macro. Same goes for entering Groovy scripts.

{{velocity}}
#set ($var = "whatever")
{{/velocity}}

{{groovy}}
def var = "whatever"
{{/groovy}}