Table 155 – Entries in a collection dictionary

Key

Type

Value

Type

name

(Optional) The type of PDF object that this dictionary describes; if present, shall be Collection for a collection dictionary.

Schema

dictionary

(Optional) A collection schema dictionary (see Ta b l e 156 ). If absent, the conforming reader may choose useful defaults that are known to exist in a file specification dictionary, such as the file name, file size, and modified date.

D

byte string

(Optional) A string that identifies an entry in the EmbeddedFiles name tree, determining the document that shall be initially presented in the user interface. If the D entry is missing or in error, the initial document shall be the one that contains the collection dictionary.

View

name

(Optional) The initial view. The following values are valid:

D The collection view shall be presented in details mode, with all information in the Schema dictionary presented in a multi-column format. This mode provides the most information to the user.

T The collection view shall be presented in tile mode, with each file in the collection denoted by a small icon and a subset of information from the Schema dictionary. This mode provides top-level information about the file attachments to the user.

H The collection view shall be initially hidden, The conforming reader shall provide means for the user to view the collection by some explicit action.

Default value: D

Sort

dictionary

(Optional) A collection sort dictionary, which specifies the order in which items in the collection shall be sorted in the user interface (see Ta b l e 158 ).