mod_base is the base module, which acts as a container module holding most of Zotonic basic dispatch rules <all-dispatch-mod_base>, actions and scomps.
Note that the amount of templates has been kept to a minimum in this module, so that sites are free to implement whatever templates they want. For a standard site with commonly used templates, see the mod_base_site module.
Add more documentation
dispatch rules <all-dispatch-mod_base>, mod_base_site.