D AMS                               	ams
D DVIPS                             	dvips
D EPLAIN                            	eplain
D LATEX2E                           	latex2e
D MFT                               	mft
D NFSS2                             	nfss2
D PLAIN                             	plain
D TEXDRAW                           	texdraw
D TUGBOAT                           	tugboat
D UTIL                              	util