common /clist/ dot, odot, topscr, foff, fmax, nxtrec, lstred, savdot,
               lowc, highc, cc, outcc, markp, markb
 
biginteger dot		# current logical record; init: 1
biginteger odot		# old value of dot
biginteger topscr	# top of last screen; init: 1
biginteger foff		# offset in file of logical line 1; init: 0
biginteger fmax		# highest line number of logical file; init: MAXINT-1
biginteger nxtrec	# next record on file; init: 1
biginteger lstred	# last record read; init: 0
biginteger savdot	# value of dot saved by the = command; init: 1
integer lowc		# low value of record column range
integer highc		# high value of record column range
integer cc		# carriagecontrol type of input file
integer outcc		# carriagecontrol type of output file
integer markp		# index of highest line number in markb; init:0
integer markb(MARKSIZE, 0:MAXMARK)	# points to every 100th line on file