Instead of the preface

      The idea of creation of the program came to the author’s mind at the moment when a following situation had happened.
      One fine day the author decided to change the system block of his computer because the old one had already been hopelessly obsolete. The purchase was made and there was no limit to author’s pleasure, till a certain moment… For an year of work on a hard disk tens gigabytes very valuable, simply valuable and simple information have been collected. In three days after the guarantee expiration (1 year) the computer didn't turn on – the hard disk failed. All attempts to take from it the information were vain.
      Remembering occurred "tragedy", two Hard Disks were acquired: one - new for work, another - second-hand for backup of data. "Taught" by bitter experience, the author compressed all valuable information by the archiver and kept on the second disk. The author decided to make backup of all information every day in the evening. His memory and persistence for this task lasted for only five days then he began to forget or simply to postpone for later further (all the same exactly tomorrow happens nothing). However, there is an expression «Put your trust in God …». The guarantee on the new disk ended, passed six days and "round" of the story repeated: the working hard disk failed again. The author proud of itself, opened the second disk with archives and was again terrified – the last archiving was made 48 days ago! Naturally, the information for these 48 days has disappeared. And the reason for everything - forgetfulness and laziness.
      This program is intended for "compensation" of these two defects which ALL people have and a victory over the probability theory (and suddenly tomorrow anything bad won't occur).