By Pete Davis
You are looking at a .MRB dossier and considering, 'Why does not Microsoft rfile this stuff?' you are attaining for the telephone. cease! learn home windows Undocumented dossier codecs as an alternative - we provide you with all of the details you want to take on the commonest home windows file
Optimize records and increase your courses with this no-holds-barred examine: .MRB, .SHG, .HLP, .ANN, .BMK, COMPRESS.EXE, EXPAND.EXE, & LZEXPAND.DLL records between many others
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Extra info for Windows Undocumented File Formats - Working Inside 16- And 32- Bit Windows
The basic structure of . H L P files is that of multiple files. A . H L P file has an internal structure called the Help File System (HFS). The HFS is like a single directory in DOS and contains, simply, a list of filenames and pointers to where those files are in relation to the beginning of the help file. Each of these files, in one way or another contributes something to the help file, such as keywords, context strings, font information, and so on. All of these are then used together to render the help file on-screen.
This is just a guess, but it appears that different language versions of the help compiler produce different values for this field. Sometimes only part of the field is used. I can only assume that it, somehow, describes the sorting order for different languages. I have not been able to figure out how it is used. 1 traverses the HFS b-tree to find an HFS filename. C, which comes on the companion diskette. Since HLPDUMP2 isn't really concerned with speed or efficiency, actual traversal of the b-tree wasn't necessary.
Sadly, we have been unable to come up with the exact format of the Hall compression. It seems to operate completely differently from the |Phrases and LZ77 algorithms that we have managed to reverse engineer. HLP file. The |SYSTEM file contains a lot of information kept in the Help Project file and if you want to decompile a . H L P file, this is where you get the information for that file. 4). The SYSTEMHEADER record contains the version of WinHelp needed to use the . H L P file (in a rather vague numbering scheme), the date the file was generated, and a Flags WORD.