% @(#)overplcolu.hlq	17.1.1.1 (ESO-IPG) 01/25/02 17:43:47
%++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
%.COPYRIGHT  (c)  1990 European Southern Observatory
%.IDENT      overplcol.hlq
%.AUTHOR     RHW, IPG/ESO
%.KEYWORDS   MIDAS, help files, OVERPLOT/ROW
%.PURPOSE    On-line help file for the command: OVERPLOT/ROW
%.VERSION    870609 RHW Creation, RHW
%.VERSION    910313 RHW Improvements acc. to Verification Form
%.VERSION    910904 RHW New file overplcol.hlq for overplot/column command
%---------------------------------------------------------------------
\se
SECTION./COLU
\es\co
OVERPLOT/COLUMN                                                04-SEP-1991  RHW
\oc\su
OVERPLOT/COLUMN frame [x-coord] [y_start,y_end] [offset] [l_type]
	overplot a column of a frame on a graphic device
\us\pu
Purpose:    
            Overplot a column of a frame on a graphic device
\up\sub
Subject:    
            Graphics, frames
\bus\sy
Syntax:     
            OVERPLOT/COLUMN frame [x_coord] [y_sta,y_end] [offset] [l_type] 
\ys\pa
            frame       = image file name
\ap\pa
            x_coord     = column number or world coordinate in the frame;
                          default the first column.
\ap\pa
            y_sta,y_end = can be: (a) first and last pixel coordinate;
                          (b) start, end in world coordinates on the column.
                          Default is either the manual setting done by the
                          command SET/GRAPHICS (if present), or the whole 
                          column.
\ap\pa
            offset      = offset in pixel intensity units; default 0.0
\ap\pa
            l_type      = line type to be used; default is the currently
                          enabled line type (use SHOW/GRAPHICS).
\ap\no
Note:       
            After the overplot the last (over)plotted data set is the active
            one and subsequent commands will work on these data.
\on\see
See also:   
            SET/GRAPHICS, SHOW/GRAPHICS, PLOT/COLUMN, PLOT/ROW, OVERPLOT/ROW
\ees\exs
Examples:
\ex
            OVERPLOT/COLUMN myframe @256 @10,@100 100
            This command overplots from image myframe.bdf column 256, pixels 10 
            to 100 with an offset of 100 units.
\xe \sxe