A privatize flag 0550 (in the form of four
asterisks in the screen image) to the right of a name in the file name list 0540
indicates that the file is currently in the selection list 0520.
Sizes 0560 of all files are listed in bytes
in the lower right panel. This information aids the selection process since
time to privatize files 0110 and time to reconstitute them 0160 are both
functions of the total sizes of files placed within the current selection
list 0520. At the same time, there is no technical upper bound to the size
of an original data file 0220, beyond that imposed by the operating system.
For example, in a 32 bit implementation, a file of 2 to the 32nd power
bytes (over 4 billion bytes) can be handled. At the other extreme, the
programmer may wish to impose a lower bound on cumulative file size (say
16 bytes) to guard against attempts at reverse engineering.
Date and time 0570 of all files are shown as
an aid to the user in ensuring that selected files are appropriate versions.
Date and time of selected files are incorporated during processing into the
index file 0260 and used in the reconstitution process 0160 so that retrieved
data may be identical in every respect to the original form.
