SORT--Notes

Specifying a source

Unless you specify the command or filename parameter, SORT acts as a filter 
and takes input from the MS-DOS standard input (usually from the keyboard,
from a pipe, or from a file).

Using redirection symbols with SORT

You can use the pipe (|) or the less-than sign (<) to direct data through
the SORT command from command or filename. If you want to display the
information one screen at a time or direct the information to a file, you
can also specify the MORE command or a filename. You can use the
greater-than sign (>) to direct the sorted output to a file.

Before using a pipe for redirection, you should set the TEMP environment
variable in your AUTOEXEC.BAT file.

Collating sequence

The SORT program uses the collating-sequence table corresponding to the
country code and code-page settings. Characters greater than ASCII code 127
are sorted based on information in the COUNTRY.SYS file or in an alternate
file specified by the COUNTRY command in your CONFIG.SYS file.

Uppercase vs. lowercase

SORT does not distinguish between uppercase and lowercase letters.

Limits on file size

The SORT command can handle files as large as 64K.