The PATH variable specifies the list of directories that TCC will search for executable files that aren't in the current directory. PATH is used by some application programs to find their own files. See the PATH command for a full description of this variable, which can also be changed or modified with SET and ESET.
Note: We strongly recommend that you always leave at least your WINDOWS and SYSTEM32 directories in the PATH. The directory where TCC resides need not be included in PATH.