Is it possible to add a drawing field to a PDF in InDesign similar to the way you add buttons and forms? By drawing field I mean a place you can use your mouse/trackpad/tab to draw lines/pictures.
Not sure if it is possible, but it is worth asking.
No. Not in InDesign.
Nor is it possible to do that in Acrobat either. PDF has no concept of a "drawing field."
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