=====RTOWD=====
  * [[cg:books:rt_one_wk:book_1 | Ray Tracing in One Weekend]]  <wrap wip>W.I.P</wrap>
  * [[cg:books:rt_one_wk:book_2 | Ray Tracing: The Next Week ]]
  * [[cg:books:rt_one_wk:book_2 | Ray Tracing: The Rest of Your Life ]]