C.11.18.1 Structured Display Annotation Attribute Descriptions

C. Unformatted Text Value and Display Environment Spatial Position

The Unformatted Text Value (0070,0006) rendered in Display Environment Spatial Position (0072,0108) need not be confined to the specified bounding box.

Notes: 1. An implementation may render text outside the confines of the bounding box if necessary to display all the specified text.

2. Alternatively, an implementation may choose to render the text in a scrolling box, or a link to another fixed or popup window as appropriate.

When the text bounding box overlaps an Image Box (from the Structured Display Image Box Module), the text box has a higher display priority (i.e., it is on top of the image box). The background color of the bounding box is undefined.

Notes: 1. Commonly, the background region of the bounding box around the text will be rendered “transparently”, i.e. the image will be visible, though some implementations may choose to opacify the bounding box behind the text to improve its readability.

2. With a transparent background, for example, an implementation may choose an “exclusive or” style opacification to be sure that the text is discernible over light and dark portions of the image.

The size, font, and rotation of the individual rendered text characters are unspecified.