You might also like SGML which has the SHORTREF built-in mechanism for defining custom Wiki syntax and casual math. Gives you the better part of troff with form

You might also like SGML which has the SHORTREF built-in mechanism for defining custom Wiki syntax and casual math. Gives you the better part of troff with formal built-in up-conversion to presentational MathML or other markup. The author of GNU roff (groff), James Clark, later became the SGML guru.