Usage:
    st [ -a dir ] [ -y | -d date1 ]
        interactive entry

    st [ -a dir ] [ -y | -d date1 ] -
        write stdin to a new file

    st [ -a dir ] [ -y | -d date1 ] word ...
        write word ... to a new file

    st --help | st --man
        show this text

    st --manpage
        show additional information

    st -D [ -a dir ] [ -y | -d date1 ]
        generate date and file strings

    st -r [ -a dir ] [ -f ] [ -y | date1 [ date2 ] ]
        generate a report

    st -w [ -a dir ] [ -f ] [ -p ]
        generate a weekly report

    st -P
        show the absolute path to the data directory

    st -V
        show internal variables and version info

Use "st --manpage" for more details.