:HELP
You may use the HELP command to obtain either a listing of available
commands or to get a brief summary of a command. To get a listing of
commands, type "HELP" by itself. To get help on a specific command,
type "HELP (command name)". For example, "HELP DIR" would get you
help on the DIR COMMAND.
:ATTRIB
The ATTRIB command may be used to view or change the attributes a file
or series of files. The syntax is as follows:

    ATTRIB [+-r +-h +-s +-a] FileSpec

    (R=Read only, H=Hidden, S=System, A=Archive)
:CD
The CD (or CHDIR) command is used to change the current directory. For
example, typing "CHDIR \DOWNLOADS" would switch you to the \DOWNLOADS
directory (providing you have one). You can also type "CHDIR" by itself
to get the name of the current directory.
:CHDIR
The CD (or CHDIR) command is used to change the current directory. For
example, typing "CHDIR \DOWNLOADS" would switch you to the \DOWNLOADS
directory (providing you have one). You can also type "CHDIR" by itself
to get the name of the current directory.
:CLS
CLS will clear the SDOS window.
:COPY
COPY is a powerful command that lets you copy files from one location
to another. There are two forms of copy supported by SDOS:

    COPY <source file> <dest file>        - Copy a single file
    COPY CON <dest file>                  - Copy keyboard output to file

If you use the "COPY CON" format, all keyboard output will be sent to the
file until you send a CTRL-Z character.
:D:
"d:" designates a drive letter. For example, typing "A:" would switch you
to drive a, typing "B:" would switch you to drive b, etc.
:DEL
The DEL (or ERASE) command allows you to delete a file or series of files.
DEL accepts one parameter which is the filespec (wild card allowed) of the
file(s) you wish to delete. You will be prompted before the erasure is made
to make sure you wish to delete the files.
:DELNUL
DELNUL is a special command that will delete zero-length files. It accepts the
same parameters as DEL, but will only files that have a size of 0 bytes.
Occasionally, some programs (such as file transfer protocols) may leave zero
length files laying around. This command gets rid of them.
:DIR
The DIR command will list the files in a certain directory. Typed by itself
{i.e. "DIR"), the DIR command will list the files in the current directory.
You may also specify a directory name (i.e. "DIR C:\TURBO") or a file mask
(i.e. "DIR *.PAS") or both (i.e. "DIR C:\TURBO\*.PAS"). Specifying the
/P option will cuase the directory to pause after each screen and
specifying the /W option will display a wide directory. The "/T" option
may be used to display the TRANSFER TIME of each file.
:ERASE
The DEL (or ERASE) command allows you to delete a file or series of files.
DEL accepts one parameter which is the filespec (wild card allowed) of the
file(s) you wish to delete. You will be prompted before the erasure is made
to make sure you wish to delete the files.
:FREE
The FREE command will display the free space on a drive. Typed by itself,
FREE will display the amount of space on the current drive. By specifying
a drive letter, FREE will display the amount of free space on that
drive.
:MD
The MKDIR (or MD) command will allow you to create a subdirectory. The
subdirectory created will be a subdirectory of your current working
directoriy unless you specify otherwise. MKDIR accepts one parameter
which is the directory name/path.
:MKDIR
The MKDIR (or MD) command will allow you to create a subdirectory. The
subdirectory created will be a subdirectory of your current working
directoriy unless you specify otherwise. MKDIR accepts one parameter
which is the directory name/path.
:REN
The REN (or RENAME) command will let you rename and/or move files. Unlike
dos, you can rename across subdirectory - in effect, moving the file.
REN takes two parameters, a source and a destination file name.
:RENAME
The REN (or RENAME) command will let you rename and/or move files. Unlike
dos, you can rename across subdirectory - in effect, moving the file.
REN takes two parameters, a source and a destination file name.
:RMDIR
The RMDIR (or RD) command will let you remove a sub-directory. To do this,
there may be no files or subdirectories located within the subdirectory
you wish to remove. RMDIR takes one parameter, the name/path of the
subdirectory.
:RD
The RMDIR (or RD) command will let you remove a sub-directory. To do this,
there may be no files or subdirectories located within the subdirectory
you wish to remove. RMDIR takes one parameter, the name/path of the
subdirectory.
:SIZE
The SIZE command will display a tally of the number of files, bytes
contained in the files, and the space that would be consumed on a floppy
drive and a hard drive (2048 byte cluster assumed).
:TYPE
The TYPE command allows you to display a file in the SDOS window. The file
may be ascii or binary and will be displayed one page at a time. You will
be promped between pages  to continue or stop. The TYPE command accepts
one numeric parameter which is the filename to display.
:ZIPVIEW
This command will display the file directory of a zip file. The syntax
is ZIPVIEW followed by the name of the zip file you wish to view. (i.e.
ZIPVIEW THISZIP.ZIP".
:DEBUG
DEBUG is a watered-down version of the MSDOS program. With debug, you may
view a binary/ascii file in hexadecimal format. Unlike the MSDOS debug,
you may not make changes to the file. Typing "H" at the debug prompt will
get you a quick command summary.
:BROWSE
BROWSE is a view browser that will allow you to display a file and use the
arrow keys to scroll up and down within that file. It is similar to TYPE,
but you can move backwards as well as forwards.
:PORTSPEED
This sets the default com port and baud rate that SZMODEM will use. As with
all options in this configuration program, these are only defaults and may
be overridden with the following command lines options:
        PORT x     - Sets com port
        SPEED x    - Sets baud rate
:FOSSIL
Some BBS programs use a FOSSIL driver in an attempt to standardize their
async communications. Toggling this option to ON will cause this SZModem
use the FOSSIL driver instead of SZModem's internal com routines.
:DORINFO
If your bbs produces a DORINFOx.DEF file when a user logs on, you may use
this option to allow SZModem to grab the user's name and city and display
it on the screen during transfers. (See SZMODEM.DOC for more info)
:INSIZE
This will set the input buffer size. The input buffer stores characters after
they are read in from the modem until SZModem can process them. Note: Since
the FOSSIL drivers have fixed buffer sizes, this option only works with
the INTERNAL com routines.
:OUTSIZE
This will set the output buffer size. The output buffer buffers characters
that SZMODEM sends out the com port. NOTE: Since the FOSSIL drivers have
fixed buffer sizes, this option only works with the INTERNAL com routines.
:SZPATH
The SZPATH option allows you to specify a path that the SZXFER$$.LST,
SZMODEM.LOG, and other misc. SZModem files will be placed in.
:DELAYTIME
By default, SZModem will pause a few seconds after a transfer is completed
to allow the user/sysop to view the file lists, chat, etc. This option sets
how long SZModem will delay.
:SZTURBO
The SZTURBO option enables a special mode of SZModem designed to increase
transfer efficiency. Please see SZMODEM.DOC for more information.
:CHECKSNOW
This option will enabled snow checking on monitors that require it. Snow
checking does slow down screen display, so only toggle this on if
necessary.
:EGAVGA
This option will enable the 43/50 line enhanced screen modes if you have an
EGA or VGA display.
:NOLOG
By default, SZModem will create a special log file for use by the sysop. This
option will turn the log file on/off.
:NOPAGE
Remote users normally are allowed to page the sysop during chat mode. This
option can be used to disable that paging capability.
:DORINFOPATH
This option will set the path to your DORINFOx.DEF file if you use one.
If your bbs software does not generate a DORINFOx.DEF, then you probably do
not need this option. (See SZMODEM.DOC for more info)

