Mapped Components

The package implementer shall define a physical package format with a mapping for the required components package, part name, part content type and part contents. [M2.2]

Note: Not all physical package formats support the part growth hint.

Table 1. 9–1. Mapped components
Name	Description	Required/Optional
Package	URI-addressable resource that identifies package as a whole unit	Required. The package implementer shall provide a physical mapping for the package. [M2.2]
Part name	Names a part	Required. The package implementer shall provide a physical mapping for each part’s name. [M2.2]
Part content type	Identifies the kind of content stored in the part	Required. The package implementer shall provide a physical mapping for each part’s content type. [M2.2]
Part contents	Stores the actual content of the part	Required. The package implementer shall provide a physical mapping for each part’s contents. [M2.2]
Part growth hint	Number of additional bytes to reserve for possible growth of part	Optional. The package implementer might provide a physical mapping for a growth hint that might be specified by a producer. [O2.2]