Project     : SDAC
                   
 Name        : MARK_REGION
               
 Purpose     : This procedure selects an interval from a plot window.
               
 Category    : UTIL, GEN, GRAPHICS
               
 Explanation : The cursor is used to interactively select an x range.
               
 Use         : MARK_REGION, Start, Endr
    
 Inputs      : None
               
 Opt. Inputs : None
               
 Outputs     : Start- Time in seconds from plot basetime
		Endr - Time in seconds from plot basetime

 Opt. Outputs: None
               
 Keywords    : WMESSAGE- a message to appear in a text widget as in GOES

 Calls       : ***
	CROSSBAR [1], CROSSBAR [2], GRAPHICS_PAGE, XDEVICE
 CALLED BY:
	Y_AVERAGE [1], Y_AVERAGE [2]
 Common      : None
               
 Restrictions: 
               
 Side effects: None.
               
 Prev. Hist  : UNKNOWN

 Modified    : Version 2, Documented, 29-jan-1997

 NAME:
	mewe
 PURPOSE:
	read MEWE tables for G(T)
 CALLING SEQUENCE:
	mewe,line,te,glog,/meyer
 INPUT PARAMETERS:
       line  = ion identification no. from Mewe list
 KEYWORDS:
       meyer = use MEYER coronal abundances [def= MEWE values]
 OUTPUTS:
       glog = log G(T) (ph cm-2 s-1/EM)
       te   = temperature array (MK)
 OPTIONAL OUTPUTS:
       lambda= line wavelength (A)
       abun = abundance reative to H
       atw = atomic weight
       mion = ion name
 CALLS: ***
	CHKLOG [1], CHKLOG [2], MKLOG
 CALLED BY:
	FTEMAP, RDFIT, get_emiss, plotgt, temcal
 PROCEDURE:
       Uses READ_MEWE to get G(T) function for particular ion.
 MODIFICATION HISTORY:
	Written by DMZ (ARC) May 1989
       made UNIX compatible (DMZ, ARC Jan'93) -- reads MEWE XDR files

 NAME:   
      mksort
 PURPOSE:
      make sort file for XRP reformatter
 CALLING SEQUENCE:
      mksort,tstart,tend
 INPUTS:
      tstart,tend = start and end times of data to reformat (YY/MM/DD,HHMM:SS)
 OUTPUTS:
      none, except for file SRTCNHHMM.DOY, and logical FILID=HHMM.DOY
 KEYWORDS:
      filid = filid of control file
 CALLS: ***
	MKLOG, PARSE_ATIME [1], RD_DMP, UTIME [1], UTIME [2], UT_2_YYDOY [1], anytim [1]
	anytim [2], anytim [3], anytim [4], anytim [5], get_utrange, parse_atime [2]
	ut_2_yydoy [2]
 MODIFICATION HISTORY:
      written DMZ (ARC Mar'93)