# Directory Aliases

Directory Aliases are a shorthand way of specifying pathnames. For example, if you define an alias:

alias pf:=c:\program files

You can then reference the files in c:\program files\jpsoft by entering pf:\jpsoft. Directory aliases work in places that accept filenames and directory names (internal command arguments or the first argument in a command line), including filename completion. You cannot use them in arguments to external applications, as TCC has no way of knowing what is a valid argument for external applications.

Directory alias names can be either two or more alphanumeric characters followed by a colon, or a single digit followed by a colon.

Directory aliases support environment variable expansion.