I wanted to thank all of you for your response.

One issue, I am porting the awk utility to windows. So I do not think all of the functionality is there.
For instance when I used Ramesh's example, I received numerous errors.
Here is the code:

c:\tools\gnuwin32\bin\awk -v '/^ST/ {gsub("\\*","-",$0); out=$0".txt"}
/^SE/ { close(out) }
{ printf "%s\n",$0 >> out }
' %input%edifile.dat

Here is the result:
awk: `/ST/' argument to `-v' not in `var=value' form

Usage: awk [POSIX or GNU style options] -f progfile [--] file .
Usage: awk [POSIX or GNU style options] [--] 'program' file ...
POSIX options: GNU long options:
-f progfile --file=progfile
-F fs --field-separator=fs
-v var=val --assign=var=val
-m[fr] val
-W compat --compat
-W copyleft --copyleft
-W copyright --copyright
-W dump-variables[=file] --dump-variables[=file]
-W exec=file --exec=file
-W gen-po --gen-po
-W help --help
-W lint[=fatal] --lint[=fatal]
-W lint-old --lint-old
-W non-decimal-data --non-decimal-data
-W profile[=file] --profile[=file]
-W posix --posix
-W re-interval --re-interval
-W source=program-text --source=program-text
-W traditional --traditional
-W usage --usage
-W use-lc-numeric --use-lc-numeric
-W version --version

To report bugs, see node `Bugs' in `gawk.info', which is
section `Reporting Problems and Bugs' in the printed version.

gawk is a pattern scanning and processing language.
By default it reads standard input and writes standard output.

Examples:
gawk '{ sum += $1 }; END { print sum }' file
gawk -F: '{ print $1 }' /etc/passwd
'/SE/' is not recognized as an internal or external command,
operable program or batch file.
'{' is not recognized as an internal or external command,
operable program or batch file.
''' is not recognized as an internal or external command,
operable program or batch file.
C:\tools>edi
awk: `'/ST/' argument to `-v' not in `var=value' form

Usage: awk [POSIX or GNU style options] -f progfile [--] file .
Usage: awk [POSIX or GNU style options] [--] 'program' file ...
POSIX options: GNU long options:
-f progfile --file=progfile
-F fs --field-separator=fs
-v var=val --assign=var=val
-m[fr] val
-W compat --compat
-W copyleft --copyleft
-W copyright --copyright
-W dump-variables[=file] --dump-variables[=file]
-W exec=file --exec=file
-W gen-po --gen-po
-W help --help
-W lint[=fatal] --lint[=fatal]
-W lint-old --lint-old
-W non-decimal-data --non-decimal-data
-W profile[=file] --profile[=file]
-W posix --posix
-W re-interval --re-interval
-W source=program-text --source=program-text
-W traditional --traditional
-W usage --usage
-W use-lc-numeric --use-lc-numeric
-W version --version

To report bugs, see node `Bugs' in `gawk.info', which is
section `Reporting Problems and Bugs' in the printed version.

gawk is a pattern scanning and processing language.
By default it reads standard input and writes standard output.

Examples:
gawk '{ sum += $1 }; END { print sum }' file
gawk -F: '{ print $1 }' /etc/passwd
'/SE/' is not recognized as an internal or external command,
operable program or batch file.
'{' is not recognized as an internal or external command,
operable program or batch file.
''' is not recognized as an internal or external command,
operable program or batch file.


Thank you again for your help.