USSRLivesOn·há 14 anos·discussI believe the editor is ACE:https://github.com/blog/905-edit-like-an-acehttps://github.com/ajaxorg/ace
USSRLivesOn·há 15 anos·discussIt appears that there is a free version of this article available here: https://www.u-cursos.cl/ingenieria/2009/1/IN578/1/material_d...
https://github.com/blog/905-edit-like-an-ace
https://github.com/ajaxorg/ace