re ++++++++++++++++++++++++++++++++++++++++++++++++++++
remark     THIS IS A REMARK LINE.
remark     Remarks are left as is and are useful for
remark     the writer of the document.
re ++++++++++++++++++++++++++++++++++++++++++++++++++++
in 10          * set the normal left indent at column 10
rm 70          * set the right  margin at column 70
sf             * justify by space filling lines
he '         FORMAT (Text Output Processor) description
fo '                                                           Page #
sp 3           * space 3 lines
ce 2           * center the next two lines
The FORMAT text processor
-------------------------
ti +4          * set a temporary indent 4 columns to the right of indent
FORMAT is a text processing system.  It is invoked as:
sp 2
       FORMAT <infile name> <outfile name>
sp 2
This means accept text with imbedded commands from file name
<input-file> and send the processed text to <output-file>.  These files
are normally CP/M disk files however if the output file is specified
to be: LST: or CON: then the output is sent to the List device
(printer), or the Console device (crt) respectively.
An example invocation is:
sp 2
       FORMAT MYLETTER CON:
sp 2
ti +4
The processor accepts several commands to permit control of margins,
spacing, indentation, centering, underlining, and to simply pass
thru text.  In addition it allows both a header title at the beginning
of each page and a footer title at the bottom of each page.  These both
default to an empty line.

ti + 4         * NOTE * the plus sign is spaced from the number 4 *
Each command consists of 3 characters in the leftmost column and
(in most cases) an optional parameter.  Parameters are strings
in the case of header and footer titles and numbers in all other
cases.

ti +4
In the header and footer strings, leading spaces are ignored
and all occurrences of # are replaced in the output text
by the current page number.  If the first non space or tab
character in a header or footer string is " or ' it will be
discarded, this is a means to allow leading spaces in the string
since all spaces after the " or ' are significant.
bp
ti +4
The numeric parameters can be in one of two forms,
an absolute number sets the associated to that number or if
out of legal range, to its limit.  A signed (+ or -) number
sets the parameter to its current value + or - the value of the
number.  This allows setting for example a paragraph indent
margin to be inset from the normal indent without being required
to remember where the current indent is set.

ti +4
The default mode is "fill" i.e.  fit as many words as possible
on a line to fill out the line width, however any input lines of
text which start with space or tab maintain that number of
columns of leading space.  In any case these lines with leading
whitespace cause a "break" i.e. they cause the following text to
begin on a new line.  Several commands also cause a break (see
table of defined commands).

ti +4
In the function categories the lines referred to in centering
and underlining are input lines, therefore
to cause a single word to be underlined, for instance, simply
place it on a separate input line.  Likewise, to avoid the need
to count lines, centering and underlining may be made continous
by setting the number of lines to something huge
e.g.  4000 until it is wished to disable them again at which
point specifing 0 will cause an immediate disable.

ti +4
The FORMAT program does not recognize the tab character (ASCII
9), therefore, use the PIP program to expand tabs in the
original text before running it through FORMAT.  For example to
expand tabs to every eighth column in the file OLDLTR execute
the following:

       PIP NEWLRT=OLDLTR[T8]

The file NEWLRT is now ready to be processed by FORMAT.  Of
course since you have the source code to the Pascal version of
FORMAT you could also incorporate the ability to have FORMAT
expand tabs as it reads the input file.
bp
remark +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
sp 2
ce 2
List of defined commands
------------------------
sp 4
nf             * justify off
rem
rem
Command    Function                    Default         Break
-------    --------                    -------         -----
.bp n      begin page numbered n       n = +1          yes
.br        cause a line break                          yes
.ce n      center the next n lines     n = 1           yes
.fi        enable line filling                         yes
.sf        justify by space filling                    yes
.nf        justify off                                 yes
.fo s      set footer title to s       empty           no
.he s      set header title to s       empty           no
.in n      indent n spaces from        n = 0           no
            from left margin.
.ti n      set temporary indent to n   n = 0           yes
.rm n      set right margin to n       n = 60          no
.ls n      set line spacing to n       n = 1           no
.pl n      set page length to n lines  n = 66          no
.sp n      space n lines               n = 1           yes
.ul n      underline the next n lines  n = 1           yes
rem
rem
sp 2
ti -6
note:
underlining works only for printers which can back up the print
head one char position at a time.
bk

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