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The check-box is one of the PDF form controls, which are used to provide PDFs with data-collection and submission capabilities. A check-box is a control that functions like a switch and can be either on or off. Depending on the formatting settings chosen, a check-box control can appear as a traditional square checkbox (with or without a tick, cross, star, square or diamond symbol in it), or as a round checkable control. Like all form controls, a check-box can have one or more actions associated with it, such as going to another page in the file, opening a URL in an external web browser application and so on; these actions can be triggered by a variety of events associated with the check-box.
Check-boxes can be manipulated using Javascript, as can all other PDF form controls. This is useful for computing results from values that have been entered in other parts of the form, validating values that have been entered, interacting with other aspects of the document such as bookmarks, layers, comments and so on.
Nitro PDF Professional fully supports PDF form use, creation and editing, including all of the common form controls: text fields, radio controls, buttons, and more; and also features full support for PDF Javascript.
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