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Technical Details


Mode 1 and 2 produce better results for files of any type, whereas mode 3
and 4 are better for program files.


MODE 1


Mode 1 is the most effective if the most changes are shorter than 128 bytes.


MODE 2


Mode 2 is the most effective for many very small changes.


MODE 3


Mode 3 is the most effective for program files with many small changes (shorter
than 32 bytes).


MODE 4


Mode 4 is suited for program files too, but better for larger changes.



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After its work GCompare lists some data about the patch file.
The listed values are all information stored in the patch file about your
files.

The "type" value is the coding algorithm selected by the MODE argument.
If you want to know, which value for VARY GCompare has selected in the
AUTO DEEP mode, then type the VERBOSE option.


To distinguish the patch data of different files GPatch uses the file
size and the CRC signature. The version data or file names are not used.
This method is safe, because GCompare use it too to check whether patch data
for a file already exist before it appends new.