February 10, 2003: The RUNOFF source file of this document has not been located. This file is the result of scan, OCR, and manual touchup, starting with one of the originally distributed hectograph copies.

CC-244                                         MAC-M-193


                         Project MAC

TO:       CTSS users.

FROM:     J. H. Saltzer

SUBJECT:  TYPSET and RUNOFF, Memorandum editor and  type-out

          DATE:     November 6, 1964

     The command TYPSET is used to create  and  edit  12-bit 
BCD line-marked files.  This  command  permits  editing  and
revising by context,  rather  than  by  line  number.    The
command RUNOFF will print out a 12-bit BCD line-marked  file
in manuscript  format.    RUNOFF  contains  several  special
features not available with  the  DITTO  command,  including

     These two commands provide an alternative to the  MEMO,
MODIFY, and DITTO commands,  and  are  intended  to  provide
experience with a different  approach  to  editing  symbolic

     This memorandum was prepared with the aid of these  two

                                                      PAGE 2

                 An Edlt-by-Context Program

Program Name: TYPSET

Description: TYPSET is a command program used to type in and edit memorandum files of English text. TYPSET, along with the command RUNOFF, is an alternative to the commands MEMO, MODIFY, and DITTO. Editing is specified by context, rather than line number, and input is accomplished at high speed since the program does not respond between lines. TYPSET reads and produces files in a 1lne-marked format. The command program REMEMO will convert a file in MEMO-MODIFY format to the line-marked format. After some minor editing the file can be used with RUNOFF.

Usage: TYPSET name "name" specifies the primary name of a file to be edited, or a file to be created. or it may be absent, in which case a file is to be created and named later by the "FILE" request. The secondary name of the file is "(MEMO)". When TYPSET is ready for typing to begin. the word "Input" or "Edit" is typed, and the user may begin. If he is creating a file, he begins in high-speed input mode; if he is editing a file he begins in edit mode,

High-Speed Input Mode. In high speed input mode, the user may type lines of up to 360 characters in length (e.g.. 120 underlined PAGE 3 characters) separated by carriage returns. He does not wait for response from the program or the supervisor between lines, but may type as rapidly as desired, The full character set of his keyboard may be used. The user leaves high-speed Input mode, and enters edit mode by typing an extra carriage return, No response is typed by the program.

Edit mode. In edit mode, the program recognizes "requests" of the form given below, Except where a request is expected to cause a response. such as "PRINT," successive requests may be entered immediately on successive lines without waiting for a response from the program, Each separate request must begin on a separate line, Any responses from the program are typed in red

Requests. Editing is done line by line. Conceptually, we may envision a pointer which at the beginning of editing is above the first line of the file. This pointer is moved down to different lines by some requests, while other requests specify some action to be done to the line next to the pointer. All requests except FILE may be abbreviated by giving only the first letter. Illegal or misspelled requests will be commented upon and ignored. PAGE 4 FIND character string This request moves the pointer down to the first line which begins with the given character strlng. Only enough of the line need be specified to uniquely identify it. Since the pointer only moves down through the file the second occurrance of a line starting with a given character string may be located by giving the FIND request twice. It is not necessary to count blank characters exactly. If one blank character appears at some point in the request string, any number of blank characters or tabs at the corresponding point in the file will be deemed to satisfy the request. If 2 blank characters appear together in the request string, there must be at least two blank characters or tabs at the corresponding point in the file, etc. If the FIND request falls to locate a line beginning with the given character string, a message is printed, and the pointer is set to point after the last line in the file, Any requests which were typed in between the FIND which failed and the message from the program about the failure are ignored. Another FIND request will move the pointer back to the top of the file to begin another scan down through the file. PRINT n Starting at the pointer. n lines are printed out. The pointer is left at the last line printed. If n is absent, 1 line is printed and the pointer is not moved. If the pointer is not at a line (e.g.. above or below the file, or PAGE 5 at a 1ine just deleted) only a carriage return is typed. NEXT n This request moves the pointer down "n" lines. If "n" is absent, the pointer is moved to the next line. TOP This request moves the pointer back to above the first line in a file. DELETE n This request deletes "n" lines, starting with the line currently being pointed at. The pointer is left at the last deleted line if "n" is absent, the current line is deleted and the pointer not moved. INSERT This request returns the user to high speed input mode. All lines typed are inserted after the line being pointed at. If the very first edit request given is an INSERT, the inserted lines are placed at the beginning of the file. If an INSERT is given after FIND has run off the bottom of the file, the inserted lines are placed at the end of the file. When the user returns to edit mode by typing an extra return, the pointer is set to the last inserted line. ERASE c The character "c" becomes the erase character. Normally, the character "#" is the erase character. (The erase character is used to delete the previously typed PAGE 6 character or characters.) KILL c The character "c" becomes the kill character, Normally. the character "#" is the kill character. (The kill character is used to de1ete the entire line currently being typed.) CHANGE "string 1"strlng 2" G In the line being pointed at, the string of characters "string 1" is replaced by the strlng of characters "string 2". Any character not appearing within either character string may be used in place of the double quote character. If the letter "G" is absent, only the first occurrance of "strlng 1" will be changed. If "G" is present, all occurrances of "string 1" will be changed. Blanks in CHANGE-request strings must be counted exactly. Example: If the line being pointed at reads: it is a nice day in Boston, the request CHANGE "is"was" would cause the line to read: it was a nice day in Boston. The request CHANGE xwasxlsx will restore the line to its orlglna1 state, The request PAGE 7 CHANGE ' '.' g will change all blanks to periods, and the line reads it.is.a.nice.day.in.Boston. The request CHANGE '.'' will delete the first period, and the line now reads: itis.a.nice.day.in.Boston. The line can be restored to its original form by: CHANGE "tis"t is" CHANGE '.' , G CHANGE 'on 'on.' FILE name The edited file is filed as "name (MEMO)". If "name" is absent, the original name will be used, and the older file deleted. If no name was originally given, the request is ignored and a comment made. SPLIT name All the lines above the pointer are split into a file named "name (MEMO)". Any old copy of "name (MEMO)" is deleted. The remainder of the file may still be edited, and filed under another name. The SPLIT request may be used several times during a single edit, if desired. Unless at least one "TOP" request has been given, "name" must be different from the original name of the file being split. PAGE 8

Backspacing. The backspace key may be used to create overstuck or underlined characters. All overstruck characters are stored in a standard format, independent of the way they were typed in. CHANGE- and FIND-request strings are also converted to this standard format, so it is not necessary to remember the order in which an overstruck character was typed in order to identify it. For example, suppose the line: The NØRMAL MØDE statement of MAD had been typed in by typing the letters NORMAL, five backspaces, a slash, and four forward spaces. The slashed Ø can be changed to a normal O by typing CHANGE 'Ø'O'

Restricted Names and Recovery Procedures. Two special names are used for intermediate files by TYPSET. They are (INPUT (MEMO) (INPT1 (MEMO) Following a quit sequence (or a CTSS system breakdown) one of these files may be found. (Whenever a quit sequence has been given, a SAVE command should be issued to save the status of all files.) Since the intermediate file generally contains a complete copy of the file at the end of the last pass, it may be renamed and used as a source file, and may permit recovery of lost requests. The original file is never deleted until the new, edited file has been PAGE 9 successfully written and closed. The user's disk status and file directory are updated at the end of each pass through the file, thereby providing additional insurance against accidental loss. If an automatic logout occurs during use of TYPSET, the 12-bit indicator is lost. After resuming the logout saved file, press interrupt once; the TYPSET program will then restore the 12-bit mode. The program is now in edit mode and requests may be typed. PAGE 10 Summary of TYPSET requests possible abbreviation request response D DELETE (n) end-of-flle N NEXT (n) end-of-flle I INSERT none E ERASE x none K KILL x none F FIND string end-of-flle P PRINT (n) printed lines, end-of-flle T TOP none C CHANGE QxxQyyQ (G) none FILE (name) no name given S SPLIT name no name given Optional parameters are shown in parentheses. PAGE 11 A Right-Justifying Type Out Program

Program Name: RUNOFF

Program Description: RUNOFF is a command used to type out memorandum files of English text in manuscript format. Control words scattered in the text provide detailed control over the format, if desired. Input files may be prepared by the context editor, TYPSET.

Usage: RUNOFF name or RUNOFF name n or RUNOFF name NOSTOP n where "name" is the primary name of a file "name (MEMO)" to be typed out. If a number, "n" is present, typing starts with the page numbered "n", The optional parameter "NOSTOP" is explained below, under "Non-Stop Typing."

Control Words: Input generally consists of English text, 360 or fewer characters to a line. Control words must begin a new line, and begin with a period so that they may be distinguished from other text. RUNOFF does not print the control words. .append A Take as the next input line the first line of A (MEMO). PAGE 12 .line length n Set the line length to "n". The line length is preset to 60. .indent n Set the number of spaces to be inserted at the beginning of each line to "n". Indent is preset to 0. .single space Copy is to be single spaced. This mode takes effect after the next line. (The normal mode is single space.) .double space Copy is to be double spaced. This mode takes effect after the next line. .begin page Print out this page, start next line on a new page. .adjust Right adjust lines to the right margin by inserting blanks in the line. The next line is the first one affected. (This is the normal mode.) .nojust Do not right-adjust lines. . fill Lengthen short lines by moving words from the following line; trim long lines by moving words to the following line. (This is the normal mode.) A line beginning with one or PAGE 15 more blanks is taken to be a new paragraph, and is not run into the previous line. .nofill Print all lines exactly as they appear without right adjustment or filling out. .page n Print page numbers. (The first page is not given a page number. It has instead a two-inch top margin.) If "n" is present, print out the present page immediately, and number the next page "n". .space n Insert "n" vertical spaces (carriage returns) in the copy. If "n" carries spaclng to the bottom of a page, spacing is stopped. If "n" is absent or 0, one space is inserted. .header xxxxxxxxxxxxxxxx All of the line after the first blank is used as a header line, and appears at the top of each page alony with the page number, if specified. .break The lines before and after the .break control word will not be run together by the "fill" mode of operation. .center PAGE 13 The following line is to be centered between the left and right margins. .literal The following line is not a control word, despite the fact that it begins with a period. All control words may be typed in either upper case or lower case. Illegal control words are ignored by the RUNOFF command. A comment may appear to the right of a control word, as long as it is on the same line.

Manuscript Conventions. The RUNOFF program assumes a page length of 11 inches, with 6 vertical lines per inch. The top and bottom margins are 1 inch, except for the first page which has a 2-inch top margin. If page numbers are used, they appear flush with the right margin, 1/2 inch from the top of the page. If a header is used, it will be on the same line as the page number. The first page is not numbered, or given the header line unless the control words ".header" and ".page 1" appear before the first line of text. Customary margins are 1 1/2 inches on the left and 1 inch on the right, implying a 60-character line. This is the standard line length in the absence of margin control words. The program stops between pages and before the first page for loading of paper. The paper should be loaded so PAGE 17 that after the first carriage return typing would take place on line 1 of the paper. The left margin stop of the typewriter should be placed at the point typing will begin, and the right margin moved as far right as possible. If you now type the first carriage return, the program will continue typing.

Tabs. Tabs included in the text are faithfully reproduced in the final copy. Since there will be interactions between inserted tabs and the right-adjust and fillout procedure, the control word .nofill should precede any use of tabs. If you wish to indent, say, a whole paragraph, with right-adjustment and filling, change "indent" and "line length" rather than using a tab at the beginning of each line. In order to type out a memo which uses tabs, the typewriter tab stops and left margin must be set up properly. These may be noted within the memo for future reference by taking advantage of the fact that illegal control words are ignored. One might type, for example, .tab stops at 6, 11, 16, and 21; left margin at 0. as the first line of his memo.

Backspacing. Underlining or overtyping may be accomplished with the aid of the backspace key, even in a line that is subject to PAGE 18 right adjustment.

Non-stop Typing. If continuous form paper is used, RUNOFF can be instructed to not stop between pages by inserting the parameter "NOSTOP" after the file name (and before any initial page number) when the command is typed, e.g. RUNOFF ALPHA NOSTOP

Abbreviations. All control words may be abbreviated if desired. A list of abbreviations is given in the summary. In most cases, a single word is abbreviated by giving its first two letters; two words are abbreviated by giving the first letter of each word. PAGE 17 Summary of RUNOFF Control Words. abbreviation control word automatic break .ap .append A no .11 .line length n no .in .indent n no .ss .single space yes .ds .double space yes .bp .begin page yes .ad .adjust yes .fi .fi 11 yes .nf .nofill yes .nj .nojust yes .pa .page (n) yes, if n .sp .space (n) yes .he .header xxxx no .br .break yes .ce .center yes .li .literal no If "automatic break" is yes, the lines before and after the control word will never be run together, and the previous line will be printed out in its entirety before the control word takes effect. PAGE 18 A Program to Convert MEMO files.

Program name: REMEMO SAVED

Usage: RESUME REMEMO name1 name2 REMEMO takes as input the binary file "name1 MEMO" which is produced by the commands MEMO, and MODIFY. It produces as output a line-marked file "name2 (MEMO)", suitable for use with the TYPSET and RUNOFF commands. Since the secondary names are distinct. the same name may be used for "name1" and for "name2" with no danger of deleting the original file.

Restrictions: The resulting 1ine-marked file should be printed out with the PRINT request of the TYPSET command, to check for SPACE and CHANGE TYPE BALL control words, which have been converted to a code-word by MEMO or MODIFY. These control words must be edited back to their original form. Note that RUNOFF does not recognize any equivalent of the following DITTO contro1 words: .FOOTNOTE .END FOOTNOTE .COMMENT .CHANGE TYPE BALL .END COMMENT