wrtfile – Write TeX files from a TeX document

Wrt­file is a means of cre­at­ing self-ex­tract­ing dis­tri­bu­tions in TeX files; it is sim­i­lar in con­cep­tion to the LaTeX doc­strip mech­a­nism, but is some­what more ef­fi­cient. Wrt­file is (of course) dis­tributed us­ing its own mech­a­nisms.