Data Formats and Compression - 6.2.2. Most CBL authoring packages support both vector and bitmap graphics.
Vector graphics have several advantages over their bitmap counterparts.
The data files are much more compact, and easier to edit and it is possible to re-size vector graphics with little or no loss of quality. High quality bitmap graphics however tend to be extremely large, and they are not easy to re-size without a substantial loss of quality. These, however, are expensive high-end products. There are many cheaper alternatives that may well be more suitable for CBL developers.