User`s guide

Requirements Links for Library Blocks and Reference Blocks
5-21
Manage Requirements Inside Reference Blocks
If your library block is a subsystem or a Stateflow atomic subchart, you can create
requirements links on objects inside the subsystem or subchart. If you disable the link
from the reference block to the library, you can add, modify, or delete requirements links
on objects inside a reference block. Once you have disabled the link, the RMI treats those
links as locally created links.
After you make changes to requirements links on objects inside a reference block, you
can resolve the link so that those changes are pushed to the library block. The next time
you create an instance of that library block, the changes you made are copied to the new
instance of the library block.
The workflow for creating a requirement link on an object inside a reference block is:
1
Within a library you have a subsystem S1. Drag S1 to a model, creating a new
subsystem. This subsystem is the reference block.