 
 The file format is actually quite simple - you just need a text file which consists of lines each starting with one of 
 the following commands: 

     FILE <filename>         e.g. FILE test.exe 

 specifies the file to which the following instructions are to be applied. A patch file may contain multiple FILE 
 directives. 

     VER <offset> <data>     e.g. VER 00001234 abcdef 

 checks if the specified data is present at the given file offset [all values in hex, data can be just a string of digits 
 with no blanks in between; up to 16 bytes are allowed in one statement]. If the check fails, the patch process is 
 aborted resp. the program skips to the next FILE statement. 

     CHA <offset> <data>     e.g. CHA 00001234 012345 

 changes the data at the given offset - syntax is same as in VER. It is a good idea to do all VERification before 
 starting the first CHA. 

 Blank lines and data lines starting with a ";" are ignored. 

 As you can see from this, there seems to be no way to _insert_ or _delete_ bytes in the file. To make patches 
 applicable to multiple versions of the same file, you can specifiy more than one FILE directive for the same filename 
 - only a patch with all VER commands matching is executed. 

 Credit:  Marcus Groeber   

