EDIT Subcommands-OVERLAY OVERLAY Use the OVERLAY subcommand to selectively replace one or more character
strings in the current linewith the corresponding nonblank characters
in the iine being keyed in.The format of the OVERLAY subcommand is:
r----I Overlay L- , [line]
line specifies an input line thatreplaces corresponaing character
positions in the current line.On a typewriter terminal, if you
enter theOVERLAY subcommand with no data line, input record
remains unchanged.
1. Blank characters in the input line indicate that the corresponding
characters in the current line are not to be overlaid. For
example:
CHARMIE
o L
CHARLIE
Blanks in columns 3, 4, 5, and 6 of theOVERLAY line indicate that
columns 1, 2, 3, and 4 of the current line are not to be changed.(At least one blank must follow the OVERLAY subcommand, which can
be truncated as0). 2. This subcommand may be entered at a typewriter terminal by typing
the letter"0", followed by a backspace, by the overlaying
characters. This sets up the correct alignment on the terminal.
3. An underscore in the overlaying line must be used to place a blank
into the corresponding position of the current line. Thus, an
underscore cannot be placed (or replaced) in a line.
4.OVERLAY should be used with care on lines containing underscored words or other compound characters.
To perform a global overlay
just prior to issuing the
you enter:
operation, issue the REPEAT subcommandOVERLAY subcommand. For example, when
repeat *
overlay'l( an 'l( is placed
beginning withwith the IMAGE setting.
in the leftmost column of each record in the file,
the current line. The leftmost column, for files
settingON, is determined by the first logical tab When verification is on, the line is displayed at the terminal after it
has been overlaid.
Section 3. EDIT Subcommands andMacros 239
strings in the current line
in the iine being keyed in.
r----
line specifies an input line that
positions in the current line.
enter the
remains unchanged.
1. Blank characters in the input line indicate that the corresponding
characters in the current line are not to be overlaid. For
example:
CHARMIE
o L
CHARLIE
Blanks in columns 3, 4, 5, and 6 of the
columns 1, 2, 3, and 4 of the current line are not to be changed.
be truncated as
the letter
characters. This sets up the correct alignment on the terminal.
3. An underscore in the overlaying line must be used to place a blank
into the corresponding position of the current line. Thus, an
underscore cannot be placed (or replaced) in a line.
4.
To perform a global overlay
just prior to issuing the
you enter:
operation, issue the REPEAT subcommand
repeat *
overlay
beginning with
in the leftmost column of each record in the file,
the current line. The leftmost column, for files
setting
has been overlaid.
Section 3. EDIT Subcommands and