lzw.LSB
// LSB means Least Significant Bits first, as used in the GIF file format.
const LSB = iota
lzw.MSB
// MSB means Most Significant Bits first, as used in the TIFF and PDF
// file formats.
const MSB = iota
lzw.NewReader
// NewReader creates a new io.ReadCloser.
// Reads from the returned io.ReadCloser read and decompress data from r.
// If r does not also implement io.ByteReader,
// the decompressor may read more data than necessary from r.
// It is the caller's responsibility to call Close on the ReadCloser when
// finished reading.
// The number of bits to use for literal codes, litWidth, must be in the
// range [2,8] and is typically 8. It must equal the litWidth
// used during compression.
//
// It is guaranteed that the underlying type of the returned io.ReadCloser
// is a *Reader.
func NewReader(r io.Reader, order Order, litWidth int) io.ReadCloser
lzw.NewWriter
// NewWriter creates a new io.WriteCloser.
// Writes to the returned io.WriteCloser are compressed and written to w.
// It is the caller's responsibility to call Close on the WriteCloser when
// finished writing.
// The number of bits to use for literal codes, litWidth, must be in the
// range [2,8] and is typically 8. Input bytes must be less than 1<<litWidth.
//
// It is guaranteed that the underlying type of the returned io.WriteCloser
// is a *Writer.
func NewWriter(w io.Writer, order Order, litWidth int) io.WriteCloser