WOBA
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== References == | == References == | ||
* [http://www.kreativekorp.com/swdownload/wildfire/HC%20FILE%20FORMAT%202010.TXT The Definitive Guide to the HyperCard Stack File Format] describes the WOBA format in the section on the BMAP block | * [http://www.kreativekorp.com/swdownload/wildfire/HC%20FILE%20FORMAT%202010.TXT The Definitive Guide to the HyperCard Stack File Format] describes the WOBA format in the section on the BMAP block | ||
| − | * [ | + | * [https://github.com/kreativekorp/powerpaint PowerPaint] can read and write WOBA image files |
Latest revision as of 01:58, 8 April 2015
The WOBA format was used inside a HyperCard stack to store black-and-white bitmap images using a form of lossless compression invented by Bill Atkinson. The format has no formal name; the name WOBA was given to the format by the lead developers of Project 11, an attempt at a HyperCard clone, in the early 2000s. The name WOBA stands for "Wrath of Bill Atkinson" and was inspired by the complexity and non-obviousness of the compression algorithm.
The WOBA format was never used outside of HyperCard, so any instances of a WOBA image by itself were most likely extracted from a HyperCard stack as part of a reverse-engineering effort. An extracted WOBA image usually includes the block header from the HyperCard stack format to make it easily identifiable.
[edit] References
- The Definitive Guide to the HyperCard Stack File Format describes the WOBA format in the section on the BMAP block
- PowerPaint can read and write WOBA image files
