Using Images and Image-Related Objects
There are two main types of graphic images available for your forms—static bitmap images, which you insert directly into your forms, and placeable bitmaps, which are loaded from an image file in the end-user environment at run time. Closely related to placeable bitmaps are signature fields, barcode fields, and circle fields:
Although they place graphic images on the form instead of text, signature fields, placeable bitmap fields, barcode fields, and circle fields are still considered data fields and are, like standard data fields, identified by data ID and description.