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Early societies relied on a gift economy based on favours. Later, as commerce developed, less permanent human relations were formed, depending more on transitory needs rather than enduring social desires.
The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate.
In marketing and quality management, the voice of the customer (VOC) summarizes customers' expectations, preferences and aversions.. A widely used form of customer's voice market research produces a detailed set of customer wants and needs, organized into a hierarchical structure, and then prioritized in terms of relative importance and satisfaction with current alternatives. [1]
A PDF creator and virtual PDF printer for Microsoft Windows PDF-XChange: Proprietary: Yes: PDF Tools allows creation of PDFs from many types of source input (images, scans, etc.). The PDF-XChange print driver allows printing directly to a PDF. A "lite" version of the print driver is free for non-commercial (home and academic) use. PrimoPDF ...
Before PDF version 1.5, the table would always be in a special ASCII format, be marked with the xref keyword, and follow the main body composed of indirect objects. Version 1.5 introduced optional cross-reference streams, which have the form of a standard stream object, possibly with filters applied. Such a stream may be used instead of the ...
PDF Expert is a PDF editing app for iPhone, iPad and Mac. [13] [14] The app allows a user to read, annotate and edit PDFs, change text and images, fill in forms and sign contracts. [15] PDF Expert was initially launched for iOS in 2010 for the first iPad and is now supported on the iPad, iPhone, and Mac. [16]
Acrobat Pro is the professional full version of Acrobat developed by Adobe to edit, create, manipulate, print and manage files in a PDF. It is currently available for Windows and macOS. Acrobat Reader is the freeware version of Acrobat developed by Adobe to view, create, fill, print and format files in a PDF.
Documents containing Adobe extended features still carry the PDF base version number 1.7 but also contain an indication of which extension was followed during document creation. [21] PDF documents conforming to ISO 32000-2 carry the PDF version number 2.0, and are known to developers as "PDF 2.0 documents".