Global AISAC is recorded in the ACF, whereas the reference AISAC is recorded in the ACB.
In other words, a Reference AISAC is an AISAC that is written into a Cue sheet. The format and benefits of referencing it with an AISAC link are the same as a Global AISAC.

Reference AISAC Uses

When using a global AISAC in a multi-person development environment, name conflicts and management problems (such as who has editing authority) may occur.
For example, there are cases where it is not necessary to share with all users, such as AISAC, which is only used in some scenes or by some people.
In this case, by preparing a linked AISAC on the reference AISAC, you can prepare an AISAC that is not referenced by other users. This makes it possible to avoid management problems.
Another use for it may be converting from the older product "CRI Audio Craft".