# Reference 0. []() 0. [the gizmo's role in markup](https://t-ravis.com/post/doc/the_gizmos_role_in_markup/) 0. [the hard problem: naming functions and other gizmos](https://t-ravis.com/post/doc/naming_functions_methods_and_other_gizmos/) 0. [WHAT functions and WHY functions](https://t-ravis.com/post/doc/what_functions_and_why_functions/)