Res. is a program that changes structure of the file. 

There are many ways to describe what is the structure of the file. Here we will provide our understanding of file types and file structure. Everything below was invented and described to let us understand what we are talking about. Without common language, it can be quite tough to communicate. It is our way to describe files and we have not based it on any existing works in this matter (for some reason we did not get that idea until recently).

Our understanding of words/statements:
- a text file - it is any file that is written on physical medium and is readable by standard text programs. That basically means that all file extensions (fe. .txt, .jpg, .zip, .db, etc.) are included in this category. When opening .jpg type file in text editor cannot show us the picture but it is not our way of thinking about files.
- binary file - it is any text file, where only "0" and "1" can be found inside. Normally, this file can be obtained by reading text file, char by char, and change each of char into binary system according to ASCII table. It is primarily done to understand files easier, sorting, comparing, and allowed us to use binary calculations, instead of chars. It is the main reason, why we always do .tmpbin file.
- compressible file - it is any text file, that volume size can be reduced by non-Exsiccate programs, with lossless compression.
- non-compressible file - it is any text file, that volume size cannot be reduced by non-Exsiccate programs, with lossless compression.
- random file - it is any text file, that has Rand-O-meteR result between 90% and 110%. You can find more about Rand-O-meter program on our pages.
- natural file, any recognizable text file that has valuable content (fe *.jpg file that can be viewed as a picture, *.zip file that can be unzipped). Generally, file that have content suggested by their extension.

On our way for understanding we made Res. that has such limitation: - small files (<10MB) and random files after res’ing are bigger by eight (8) bit.
- natural files after res’ing are smaller and their randomness is higher
- big natural files (>100MB) are compressible by non-Exsiccate program after res’ing (for structural reasons it works once and improvement is small, if possible. The test provides that the change is between 20MB and 20% of original file size - whichever is less.)
- it is possible to make non-natural file, which will have volume size bigger after Res-ing than eight (8) bit, but it will be of limited randomness and therefore will be compressible, even by non-Exsiccate program.
- program does not remember the names of used files