![]() Both the annotation and the fields are shown and hidden together to highlight extra information the user needs to fill in.Īnnotations are adequate for simple graphic and text, but can become unwieldy for more complex layouts. In the example file linked below, one of the examples uses a Rectangle annotation as the background for a group of fields. ![]() All commenting and markup annotations can also be shown and hidden. Graphics that need to be shown and hidden can usually be added as markup annotations (line, stamp, etc). An easy way to hide/show a label is to make a read only text field or a text markup annotation. In most situations there are also text and graphics associated with the fields. In most cases it's not enough to simply control field visibility. Another good use is displaying messages to the user. A couple common scenarios are to keep the user focused on only those parts of the form they need to fill out, and to keep them from being confused by unnecessary fields. There are many scenarios where it is desirable to show and hide form fields on a PDF.
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