The Viewer RI (PRO) is able to display and interact with form widgets (Acroform) that may be embedded in a PDF document. Form widgets can be selected using a mouse or other input devices and supports focus management and keyboard selection shortcuts such as; the space key, arrow keys and the return key.
Once an annotation has focus:
Form highlighting enables a transparent overlay on all visible form widgets to aid in identifying available fields. Form highlighting is controlled by a toggle button and its settings persist between viewer sessions.
Interactive form widget values once manipulated can be saved as an incremental update to a copy of the original file. This behavior is very similar to the existing annotation tooling support. When an field value is saved the corresponding appearance stream is also updated to reflect the new value. This feature helps insure maximum compatibility with other PDF processors.
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