      common /strdat/ ncurves, npoint, curve(15,20000)
      common /layout/ nscrnx, nscrny, nxpix, nypix, numfree,
     *                maxpar, maxpix, margin, nxorg, nyorg,
     *                icsm, icob, icross, ibackgr
      common /button/ ibutx(38), ibuty(38), ibutz(38), ibx, iby
      common /curves/ active, smoothed, reverse, sqrooted, overall,
     *                icolor, maxstep, nstep, step, nummax, nf, nl,
     *                valmin, valmax, scale, tickval, clipp, clipm,
     *                siglim, npcur, current(20000), cursm(20000),
     *                ncurrent(20000), curtmp(20000), itmp(20000)
      logical*4       active, smoothed, reverse, sqrooted, overall
      include         "GL/fgl.h"
      include         "GL/fglut.h"
