WACT package is a fork of the template engine extracted from original WACT PHP framework. WACT is a completely independent package and has no dependencies with other Limb3 packages.
You can also browse Limb3 based SHOP example application online. Look for «view Wact template» links in the right upper corner of pages.
Check out other example projects at http://projects.limb-project.com/ - most of them use WACT as a template engine. You can simply download projects sources and check out the templates code.