!code [iso] !no_preamble [tex] # Uncomment the following line for LaTeX 2.09 # !tex \documentstyle[12pt]{article} # Uncomment the following lines for LaTeX2e !tex_2e !raw [tex] \documentclass[12pt,a4paper]{article} !raw [tex] \usepackage{a4} !begin_document !node Example This example uses a userdefined (!LaTeX) preamble. !end_document
!ifdest [tex] !define ab2 $(a+b)^2 = a^2 + 2ab + b^2$ !else !macro ab2 (a + b)^2 = a^2 + 2ab + b^2 !endif ... The first binomial theorem: (!ab2)