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	War and Peace

		by Mario DeNobili

?ARG	The following argument combinations are illegal:

	1)	,	(no argument before comma)
	2)	m,n,	(more than two arguments)
	3)	H,	(because H=B,Z is already two arguments)
?MEM	The current operation requires more memory storage for text
	(in the text buffer) than TECO has available.
	There is room for at most 4000 (decimal) characters of text.
?FER	File error can mean one of five things:

	1)	Input file not found on an ER command
	2)	Error while trying to enter the output file
		on an EW or EB command
	3)	The device specified in a file specification does not exist
	4)	EB command given on a non-file-structured device
	5)	Attempt to perform an EB on a file with a .BK extension
?FUL	An output command such as P, EX, EC, EG, PW, N, or FN would
	have written more data to the output file than there was room
	allocated on the output device.  The data that would have overflowed
	the output device is still in the text buffer and has not been
	written out.  You can close the output file with an EF command
	and then open a new output file and continue editing.  When you
	are all done, PIP can be used to merge the two output files back
	into one.
?IEC	The only commands starting with the letter E are
	EB, EC, ED, EF, EG, EH, EK, EO, ER, ES, ET, EU, EW, EX and EY.
	When used as a command (i.e. not in a text argument), E may not be
	followed by any character except one of these.

	Secondary I/O streams (EA, EP, EI), magtape commands (EM), wildcard
	lookups (EN), and device initialization (EZ) are not available
	in TECO-8.

	The ES flag does not currently do anything.

?IFC The only commands starting with the letter F are FS, F_, and FN. When used as a command (other than EF or in a text argument), F may not be followed by any character other than one of these. The S, _, or N must immediately follow the F with no intervening spaces or commands. The two characters in an F command may not be split across macros. The FR command is not implemented in TECO-8. ?IFN File specifications must be in the form dev:filnam.ext where dev, filname, and ext are alphanumeric. The file specification may optionally end with a /S which means ignore end-of-file on any subsequent input. No characters other than the ones specified may appear in a text argument to an ER, EW, or EB command. ?ILL The specified character is not defined as a valid TECO command. (The W command is only available with VT support.) ?INP An I/O error occurred while trying to read from the input file. ?IQC The only valid " commands are "C, "R execute if alphanumeric "E, "= execute if = 0 "F, "U execute if unsuccessful "L, "< execute if less than 0 "G, "> execute if greater than 0 "N execute if not equal to 0 "S, "T execute if successful "D execute if digit "A execute if alphabetic The commands "V, and "W are not available in TECO-8. ?IQN The Q register name specified by a command such as Q, U, X, G, %, or M must be a letter (A-Z) or a digit (0-9). Pseudo-Q-registers _ and * are not available in TECO-8. ?ISA The argument preceding a search command indicates the number of times a match must be found before the search is considered successful. This argument must be greater than 0. Backward searches and bounded searches are not permitted in TECO-8.
?UTM A command macro being executed from a Q-register terminated with an incomplete command, such as 1) macro ended with with only one character of a two character command (such as F, E, or ^) 2) macro ended with a command that requires a Q-register name (such as X, G, M, %, Q, U, or ^U) but no Q-register name was specified 3) macro ended with a command that takes a string argument (such as ERfile$, Itext$, Stext$, Otag$, etc.) and the text argument was not properly terminated by an ALTMODE (or the specified delimiter if the at-sign form was used) 4) An O command was issued and the specified tag was not found in that macro (subsequent to the start of the current iteration) ?BNI There is a right angle bracket not matched by a left angle bracket somewhere to its left. (Note: an iteration in a macro stored in a Q-register must be complete within the Q-register.)
?NAE The command n= or n== causes the value of n to be typed. The = command must be preceded by either a specific numeric argument or a command that returns a numeric value. ?NAQ The " command must be preceded by a single numeric argument on which the decision to execute the following commands or skip to the matching ' (or |) is based. ?NAU The command nUq stores the value n in Q-register q. The U command must be preceded by either a specific numeric argument or a command that returns a numeric value. ?NFO Before giving an output command (P, PW, N, EC, or EG) it is necessary to open an output file by use of an EB, EW, MAKE or TECO command. To prevent possible loss of data, the EX, EC, and EG commands will be aborted if there is no output file open and there is text in the text buffer. The HKEX command will always work. To abort TECO immediately, use the ^C command. ?POP The argument specified with a J, C, or R command must point to a position within the current size of the text buffer, i.e. between 0 and Z inclusive. The argument to commands that reference pointer positions, such as m,nP or m,nK must reference buffer pointer positions bewteen 0 and Z inclusive. ?DTB An nD command was issued with an argument that was so large that the command would delete character positions outside the current buffer. The D commmand may only delete existing characters. No characters were deleted. ?OUT An error occurred while trying to write to the output file, or there was not enough room to enter the file on an EW or EB command. ?SNI The semicolon command was used at command level. The ; command may only be used within a string of commands enclosed by angle brackets, i.e. an iteration field. ?SRH A search command not preceded by a colon modifier and not within an iteration has failed to find the specified character string. After an S (or FS) search fails, the buffer pointer is left positioned at the beginning of the buffer. After an N or _ search fails, the last page of the input file has been input and, in the case of N, output, and the buffer cleared. The string that you were searching for is shown in the one-line error message. Note that the special search characters CTRL/N, CTRL/S, and CTRL/X are indicated in this string as <NOT>, <SEP>, and <ANY> respectively. Backward searches and bounded searches are not permitted in TECO-8. Anchored searches are also not permitted. Note that the action of "^" in search strings depends on the setting of the ED&1 bit. If 0, then ^ means convert next character to its control character.
?STL The maximum length of a search string is 31 characters (38 characters if you have no VR12 or VT scope support). ?UTC An incomplete command has been given. This could be caused by any of the following: 1) A command that requires a text string (such as @ER/file/, @S/text/, ^Atext^A, etc.) ended the command string, but the text argument was not properly terminated. 2) An O command was issued and the specified tag was not found in the command string subsequent to the start of the current iteration. ?PDO Your macros and iterations have been nested too deeply. ?QMO There is not enough room allocated to Q-register storage and command string storage to satisfy the current command. If you were typing a command string when you got this error message, you might be able to recover most of the command string by immediately typing CTRL/S as the very next command, thus putting the previous command string into Q-register Z.
?NYA The Y command may not be preceded by a numeric argument. To yank multiple pages, use the n<Y> command. ?NPA The argument to a P command specifies the number of times the P command is to be executed. This argument must be positive. ?NCA The number before a comma refers to a position within the text buffer. This value must be between 0 and Z inclusive and may not be negative. ?NYI The case control commands ^V and ^W are not available in TECO-8. To get TECOs version number, issue the EO command. To use the watch command (with VR12 or VT support) use the W command. Also, the push [ and pop ] commands are not implemented in TECO-8. ?UIS The only I/O switch that is defined in TECO-8 is the /S switch. ?WLO The system device is write-locked. ?YCA To prevent accidental loss of data, the commands Y, _ and F_ will abort if there is text in the text buffer and there is an output file open. If you don't care about the output file, you can kill it with the EK command. The HKY command is always permitted. Yank protection can be disabled by clearing bit 10 of the ED flag, i.e. by issuing the TECO command: ED&1ED This command may be put into your TECO.INI if you dislike yank protection. ?CCL You issued a command of the form EGcommand$ and the specified command was too large (more than 43 characters) or CCL.SV was not found on the system device. ?XAB Execution of your TECO command or command input was aborted because you typed a CTRL/C. To get out of TECO, type a CTRL/C immediately after TECO's prompt. If you accidentally got back to monitor level there is a slight chance that you can get back to TECO by using ODT to restart your core image at location 203. ?ICE The character CTRL/E is not permitted within a search string. This character is reserved for special use in future versions of TECO-8. Note that the presence of a "^E" in the string printout within the ?SRH error message denotes the presence of one of the special match control constructs, CTRL/N, CTRL/X, or CTRL/S. ?NAB The one's complement command ^_ was used without a numeric argument. The form of the command is n^_ and the command returns the one's complement of the argument n. ^_ is not a unary operator and must be used after a numeric argument (not before it). ?UE_ The commands EA, EI, EL, EM, EN, EP, EV, and EZ are not implemented in TECO-8. The only legal E commands are EBfilespec$ Edit Backup EC closes output file after moving across input EF closes output file EG$ performs EX then re-executes last compile class cmd EGcommand$ performs EX then executes command specified EK kills output file ERfilespec$ Opens file for input EWfilespec$ Opens file for output EX moves across input to output file, then closes it and exits TECO EY unprotected Y command The following commands are valid flags: ED, EH, EJ, EO, ES, ET and EU.

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