The $mill (iterator) Velocity Viewtool is a convenience tool to use with #foreach loops. It wraps a list allowing you to specify a condition to terminate the loop, and to reuse the same list in different loops.
Toolbox.xml Configuration
The following shows how the mill tool is mapped in the toolbox.xml file:
<tool>
<key>mill</key>
<scope>request</scope>
<class>org.apache.velocity.tools.generic.IteratorTool</class>
</tool>
