安装的程序: addftinfo, afmtodit, eqn, eqn2graph, geqn(链接到 eqn), grn, grodvi, groff, groffer, grog, grolbp, grolj4, grops, grotty, gtbl(链接到 tbl), hpftodit, indxbib, lkbib, lookbib, mmroff, neqn, nroff, pfbtops, pic, pic2graph, post-grohtml, pre-grohtml, refer, soelim, tbl, tfmtodit, troff, zsoelim(链接到 soelim)