|By Amyuni Tech||
|September 4, 2009 12:30 PM EDT||
With the release of Acrobat 6 (PDF 1.5), Adobe introduced the concept of the layered PDF. A layered PDF contains optional content that can be displayed or hidden by its reader. A layered PDF is a document that was originally generated by software with layer-generating capabilities. For example, AutoCAD, CorelDraw, Adobe’s In Design, Photoshop, and Microsoft’s Visio are all capable of producing layered documents or files.
Users who work with such software, can separate content into layers during page composition, save their file into PDF, and retain their separated content. A layered PDF viewer such as Amyuni’s PDF Creator then detects the document’s optional content and displays it according to its visibility settings. The primary benefit of a layered PDF is its ability to contain different types of content within a single document. For example, a single software brochure can contain multiple languages (where each layer is a separate language) that can be set to reflect a specific linguistic market.
The layered PDF has been extensively used by government immigration, education, and foreign relations departments. In addition, optional content is also used in the following fields and industries:
- Engineering firms.
- Architectural firms.
- Cartography, geology, and geography departments.
- Legal and judicial departments.
- Software research and development departments.
- Multimedia companies and departments that work with layered artwork.
Since the inception of optional content, Amyuni has initiated significant development efforts to ensure this feature of the PDF Creator:
- Continues to meet and surpass the expectations of the layered PDF market.
- Remains a competitive alternative to other layered PDF viewers.
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