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Packages
The package construct is used to combine commonly used variables, constants,
subprograms and others into a group that can be accessed in many places
with the library and use statements. The package declaration contains
object declarations that may be made visible to entities and architectures with
the use and library statements. Each package must also have a package
body. It contains objects that are used by the package but can not be used
by other entities or architectures. The package body may be empty.
The syntax for the package declaration is
The syntax for the package body is
If the simple name is included after END it must repeat the name of the
package.