October 1, 1979 CONTROL CHARACTERS
DESCRIPTIONS
3.2 DESCRIPTIONS ________________
Each character in Figure 3.1 is described in this Section. In
addition to its definition, the literal representation is
explained. The Special Character Code (see Section 4.6) is
indicated in brackets "[", "]".
CHAR NAME AND EXPLANATION ____ _________________________________________________________
BSP backspace character (default -- see Section 2.2)
DEFINITION: Entered via the backspace key on an
upper/lower case terminal, or control-h
on an upper-case only terminal.
LITERAL: The backspace character is always used
as a literal character, though it may
not be entered as the only text in an
INSERT command or input line. Leading
backspaces are ignored in an input line.
Backspaces are usually used to achieve
overstruck characters during FULLPRINT,
and should normally be entered in this
context (see Section 4.6 for a more
complete discussion of overstruck
characters). [!22]
_ blank fill (underscore)
DEFINITION: If the Key delimiter in a FRESS command
is a blank, all underscores are
interpreted as literal blanks.
LITERAL: A non-blank Key delimiter must be used.
[!109]
% capitalize character ("percent" sign)
DEFINITION: In a <text> parameter (SUBSTITUTE,
INSERT, MLABEL second parameters) or in
lines of Input Mode, it causes the next
character to be capitalized; it is
ignored if next character is
non-alphabetic.
LITERAL: !/ [!63]
20 -- Section 3 Release 9.1 FRESS Resource Manual
October 1, 1979 CONTROL CHARACTERS
DESCRIPTIONS
> command separator ("greater than" sign)
DEFINITION: The character that separates multiple
commands on one line (see Section 5.4).
LITERAL: In Command Mode, use two symbols for
every symbol to be represented. [!110]
? defer character (question mark)
DEFINITION: Either <scope> or <lp> can be deferred
in a command specification. If either
is to be completely deferred, a "?"
should be specified; if one is to be
partially deferred (one end of <scope>),
the procedures described below under
"defer separator" should be followed.
LITERAL: For pattern parameters of command lines
only containing ____ "?"s, use one more
symbol than the number of symbols to be
represented. [!111]
= defer separator ("equals" sign)
DEFINITION: It is possible to defer the beginning
and/or the endpoints of <scope> by
replacing it with "?=" or "=?",
respectively. Once the deferred
location has been found, it can be
resolved to the system by specifying it
after a "?" and a delimiter.
LITERAL: In Command Mode, use two symbols for
every symbol to be represented. [!126]
... ellipsis (three periods)
DEFINITION: It is possible to identify a string by
specifying the beginning and end points
with ellipses ("...") in between. The
endpoints must be within the editing
buffer of 2100 characters. If they are
not, one end can be deferred (see "defer
Note separator" above). ____, if ellipses
are specified as one end of <scope>
(e.g., "c/start..."), FRESS will take a
single extra character from the end of
<scope> which the ellipses represent.
For example, given the string
"123xx456": if "c/...xx/*" is
FRESS Resource Manual Release 9.1 FRESS ResoSection 3 -- 21
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