Key |
Type |
Value |
---|---|---|
Image |
stream |
(Required) The image XObject for the alternate image. |
DefaultForPrinting |
boolean |
(Optional) A flag indicating whether this alternate image shall be the default version to be used for printing. At most one alternate for a given base image shall be so designated. If no alternate has this entry set to true, the base image shall be used for printing by a conforming reader. |
OC |
dictionary |
(Optional; PDF 1.5) An optional content group (see 8.11.2, "Optional Content Groups" ) or optional content membership dictionary (see 8.11.2.2, "Optional Content Membership Dictionaries" ) that facilitates the selection of which alternate image to use. |