TEXTUTIL “Text editor Utilities”.
The core of a text editor program. SIZE: 1512 bytes.

ID #F0
  01 DELETE #channel,record
  03 FILESZR("filename")
  04 INSERT #channel,record,"string"
  05 REPLACE #channel,record,"string"
  06 SEARCH(A$,col,start,end,channel)

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TEXTUTIL gives 5 keywords and one poll hand-
ler.  The keywords are for easy control of
TEXT (LIF1) files.  The poll handler lets you
LIST or PLIST a TEXT file, as if it were a
BASIC file.  (But you can't EDIT one).

FILESZR (FILE SiZe in Records) tells how many
records (lines) are in a TEXT file.

DELETE gets rid of one record (line) in a
TEXT file, and shrinks the file accordingly.

INSERT adds a string as a new record, making
the TEXT file grow accordingly.

REPLACE is a combination of DELETE and INSERT
which results in the file either growing or
shrinking as needed.

SEARCH looks through a TEXT file for a sub-
string or wildcard pattern, and returns its
position if found.  For example,
SEARCH("fonch",1,0,9999,2) looks through the
TEXT file ASSIGNed to #2, starting at record
0 (the beginning) and stopping at record 9999
or the end (whichever comes first) at column
1 of record 0, for "fonch".  If found, a num-
ber of the form RRR.CCCLLL is returned, where
RRR=record, CCC=column, and LLL=length.  If
not found, a 0 is returned.

A search string can sspecify wildcards for
pattern searches.  The backslash (\) is used
to turn the wildcard feature on and off.

After a backslash, "." means "any one charac-
ter", "@" means "any number of characters",
"^" means "the beginning of the line", and
"$" means "the end of the line".

So searching for "\DOC$" would look for any
line ending with "DOC".