XCUR-Uses cursor to delimit part of a spectrum

Description:

If a spectrum has been displayed on the current soft display device, XCUR allows the user to delimit a range of it in X using the cursor. The sequence 'SPLOT parms', 'XCUR', 'SPLOT will result in the display of the delimited part of the spectrum.

Source comments:

 X C U R

 Uses the graphics cursor to delimit a range in X,
 setting the user variables XSTART and XEND accordingly.

 Command variables / keywords - None.

 User variables -     (">" input, "<" output)

 (>) SOFT     (Character) Device / type for soft plots.
              See documentation on 'SOFT' command for
              details.
 (>) TVXST    (Numeric) X-start value for current plot.
 (>) TVXEN    (Numeric) X-end value for current plot.
 (>) TVLOW    (Numeric) Lowest value of current plot.
 (>) TVHIGH   (Numeric) Highest value of current plot.
 (<) XSTART   (Numeric) X-start for next plot.
 (<) XEND     (Numeric) X-end for next plot.

                              KS / CIT 26th July 1982