1 02/18/85  overlay, ov
 2 
 3 Syntax as a command:  ov paths {-control_args}
 4 
 5 
 6 Function: reads several ASCII segments and writes the result of
 7 superimposing print positions from each segment on the user_output I/O
 8 switch output.
 9 
10 
11 Arguments:
12 paths
13    are the pathnames of input segments.  The archive convention is
14    allowed.
15 
16 
17 Control arguments:
18 -indent N, -ind N
19    indents the print positions of an input segment N columns on output.
20    It only affects the path immediately preceding it.  If you don't
21    give it, an indent of 0 is used.
22 -page_length N, -pl N
23    sets the page length of the output.  If you don't supply it, a page
24    length of 60 is used.
25 
26 
27 Notes: Because the overlay command uses the printer conversion
28 programs, control characters are removed from input files except for
29 newline (NL), backspace (BS), vertical tab (VT), and formfeed (FF).
30 
31 If identical print positions containing the same characters are
32 superimposed, a boldface type results.  By following input segments
33 with -indent, you create output containing columns of text.