When you create a new module it also registers new custom namespace for Lang, View and Config. For example, if you create a new module named blog, it will also register new namespace/hint blog for that module. Then, you can use that namespace for calling Lang, View or Config. Following are some examples of its usage:
Calling Lang:
Lang::get('blog::group.name');
@trans('blog::group.name');
Calling View:
view('blog::index')
view('blog::partials.sidebar')
Calling Config:
Config::get('blog.name')