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Zend OPcache [9] is an open source [10] component of Zend Server and Zend Server Community Edition bundled with the PHP language itself. [7] Zend OPcache speeds up PHP execution by opcode caching and optimization. It stores precompiled script bytecode in shared memory. As of version 7.0 it can store precompiled script bytecode on disk.
The OpenDocument format (ODF), an abbreviation for the OASIS Open Document Format for Office Applications, is an open and free (excluding maintenance and support) [1] document file format for saving and exchanging editable office documents such as text documents (including memos, reports, and books), spreadsheets, databases, charts, and presentations.
The effect on application performance of opcode caching varies widely, depending on factors such as the inherent execution time of the PHP application and the percentage of source code actually executed on a given request, and whether additional optimization steps are performed.
Supports a range of annotation types. Annotations are stored separately from the unmodified PDF file, or (since version 0.15 with Poppler 0.20) can be saved in the document as standard PDF annotations. Evince: GNU GPL: Yes Yes Default PDF and file viewer for GNOME; replaces GPdf. Supports addition and removal (since v3.14), of basic text note ...
PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7. The format is a subset of a COS ("Carousel" Object Structure) format. [24]
Their core product, PDFNet SDK, has gone through many iterations since its introduction in 2002. They were early adopters of Microsoft Silverlight and XPS technologies, launching the PDF2XPS product within a year of the format standardization in 2007. [3]
XMP standardizes a data model, a serialization format and core properties for the definition and processing of extensible metadata. It also provides guidelines for embedding XMP information into popular image, video and document file formats, such as JPEG and PDF, without breaking their readability by applications that do not support XMP ...