OPTIONAL
SYNOPSIS
        int sl_open(string filename)

DESCRIPTION
        Opens the file <filename> for use as a SQLite database.
        If the file doesn't exists it will be created.
        Only one open file per object is allowed. On success this
        function returns 1, otherwise usually an error is thrown.

        The function is available only if the driver is compiled with
        SQLite support. In that case, __SQLITE__ is defined.

HISTORY
        Added in LDMud 3.3.713.

SEE ALSO
        sl_exec(E), sl_insert_id(E), sl_close(E)