input-file, ...
The input file specification indicates the file to be formatted; TeX uses TEX as a default file extension. If you omit the input file entirely, TeX accepts input from the terminal. You specify command options using the conventional VAX/VMS arrangement -- options begin with a slash mark (/), and are placed following the command name or following the input file specification.
Output files are always created in the current directory; the DVI file has the file type DVI, and the log file has the file type LIS. When you fail to specify an input file name, TeX bases the output names on the file specification associated with the logical name TEX_OUTPUT.