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]Deleting Text[
The TECO text editor makes it easy to delete words, sentences, etc. from
the buffer. There are two different commands used, line delete, and letter
delete.
'K'
The "K" issued when you choose to delete lines of text from the editing
buffer. Common forms are as follows:
K Delete the text from the pointer through the end of the current
line.
0K Delete the text from the beginning of the line to through the
pointer.
5K Omit the following five lines from the buffer.
HK Kill the entire contents of the buffer.
...
'D'
The "D" appropriately is used to delete individual characters. A few of the
forms found are:
D Delete the character which follows directly after the text pointer.
5D Delete the following five characters from the text, starting from
the pointer.
-1D Delete the character directly behind the pointer.
...
]Searching[
All good word processors include a routine to search and replace a string
of text. So does the TECO text editor. Two forms are used, the locate text,
and the search and replace text commands.
'S'
The "S" is used to locate a specified string of text currently in the
editing buffer. If the text is found, the pointer is positioned directly after
the specified text. If the string is not found, an error message results and
the text pointer is placed at the beginning of the buffer.
S <text> <ESCAPE>
For example, to locate "This is an example.", enter:
SThis is an example.$
'FS'
"FS" for find and replace does exactly that. It searches for a specified
string of text, and if found replaces it with another sting of text. If the
specified text is not found though, the pointer is positioned at the beginning
of the buffer just like the "S" command. The "FS" command is of the form:
FS <old text> <ESCAPE> <new text> <ESCAPE>
For an example, to replace "hullo" with "hello!", use the command:
FShullo$hello!$
]Saving[
To save the new version of the file which you have been editing, you enter
the exit command and it shall be saved in your directory. Remember though, if
you wish to quit but not replace a file with your edited version, just type ^C
twice.
'EX'
The "EX" command is used to write the current buffer to the output file,
then exit from TECO. For example:
EX$$
(Note: Remember that <ESCAPE> is echoed as $, and typing <ESCAPE> twice causes
a command to be executed.)
FLAGS
=====
The TECO text editor is not limited to the commands already shown. The
editor has a few flags which can be entered at the * prompt that will modify
the TECO environment.
To examine the value of a flag type:
[flag]x
Where [flag] is the specified flag and x is a numeric argument which returns
text. To set the value of a flag enter:
x[flag]
Where x is the number or command being specified for the flag [flag].
'EH'
EH is the error handling flag. Here's the table of arguments and their