–noun an introductory discourse; introduction; preface; preamble.
Origin: 1350–1400; < L prooemium < Gk prooímion prelude (pro- pro-2 + oím(ē) song + -ion dim. suffix); r. ME proheme < MF < L, as above
Proem started life in around early 2010 and has seen a few different incarnations since. At one stage around the end of 2010 I had an almost complete framework in place. Things change however and a few rewrites latter it is where it is today.
The current incarnation was started at the end of 2011 after playing with the PHP5.4 alphas for about 6 months.