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Chapter 7. Transparency

Chapter 7. Transparency

PDF 1.4 extends the Adobe imaging model to include the notion of transparency. Transparent objects do not necessarily obey a strict opaque painting model but can blend (composite) in interesting ways with other overlapping objects. This chapter describes the general transparency model but does not cover how it is implemented. Implementation-like descriptions are used at various points to describe how things work, for the purpose of elucidating the behavior of the model. The actual implementation will almost certainly be different from what these descriptions might imply.

The chapter is organized as follows:


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