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"title=string" — On an X windows display, the title given by string is used inthe XSetWMName() and XSetWMIconName() calls to set the windowand icon labels. With most X11 window managers, that means the titlewill appear in the window’stitle bar."geometry=widthxheight+xoff+yoff" — With the x11 high-resolution plot windows,sets the size and position of the window. Aswith the conventionalX11 syntax for specifying window geometry, not all parts of the geometrystring are required."open" — Turn on graphics mode. If there is no graphics filter program currentlyactive for the current filter number (see above), the filter programassociated with the current GTERM variable is started. Recognized GTERMvalues are vga , ega , cga , herc , x11 ,and sun ."close" — Turn off graphics mode, unless the perpetual or persistent modehas been selected."kill" — Turn off graphics mode and terminate graphics process."erase" — Clear the graphics-mode screen (or the text screen if graphics modeis off)."addpoint" — Before a call to data_plot() will cause the plot to be made withminimal redrawing. Used for updated plotting during scans."addline" — Before a call to data_plot() will prevent the current data frombeing erased and the new data from changing the ranges when the newdata points are drawn. Used for plotting several data sets from differentdata groups on top of each other."mca" — Before a call to data_plot() will cause the data points to be displayedusing a minimal redrawing algorithm, appropriate for displayingdata actively being accumulated by an MCA-type device. The "dots"and "ebars" modes must be turned off for the algorithm to work effectively."lp" — Before a call to data_plot() will generate printing instructions appropriatefor plotting on a 132-column printer.data_dump(grp, start, npts, el_0, [, el_1 ... ] [, fmt1 ] [, fmt2 ]) — Efficientlywrites elements from group grp to turned on output devices. The startingpoint is start and the number of points is npts . The elements specified byel_0 , e1_1 ,etc., are printed. If el_0 is the string "all" ,all the elements foreach point are printed. If npts is zero, only the points from start to the lastpoint added using data_nput() or data_put() are printed. The element argumentscan be combined in a single space- or comma-delimited string.The optional argument fmt1 is a string, having the format "%#" ,that specifieshow many data points (specified by the number # )are to be printed on eachline. If the number # is followed by the letter C ,abackslash is added to each112 REFERENCE MANUAL INTERIM WORK-IN-PROGRESS (8/16/01) NOT FOR GENERAL DISTRIBUTION