Does your PDF viewer fully support page labels? Does your PDF authoring software? Support for page labels can be a key factor in choosing a PDF viewer, especially for users dealing with complex documents.
To avoid confusing and frustrating users, applications can and should be robustly prepared for significant changes to PDF – with end user messaging in mind – well before files start to appear in the marketplace.
These synthetic files are intended for user experience and human-computer interaction (HCI) specialists to assess the behavior of their current generation of PDF applications to ensure that appropriate user-centric messages are displayed before future PDF changes are made and available to users.
All ISO publications are written according to a set of rules known as the ISO Directives. In this article, the PDF Association’s CTO, Peter Wyatt explains how to understand the formal terminology in ISO’s standards for PDF technology.
Although PDF is commonly understood as a single holistic file format, in reality, PDF comprises a number of distinct dialects, each designed to support a specific aspect of the format.