NewReader returns a reader from a seed position file.

NewWriter creates a new Writer.

os.Getpagesize().

ErrBrokenFile means the file is not complete.

ErrInvalidFileFormat means invalid file format.

ErrVersionMismatch means version mismatch between files and program.

Magic number for checking file format.

Magic number for the index file.

MainVersion is use for checking compatibility.

MinorVersion is less important.

PositionsIndexFileExt is the file extension of seed position index file.

Reader is for reading the seed position of a genome.

Writer saves a list of seed positions to a file.