Accessing extra cards with HQ Interface and The Maker's Eye: Optional?

By Carist, in Android: Netrunner Rules Questions

Posted at

From the FAQ:

If the Runner has a Medium installed with 3 virus counters on
it, how many cards must he access from R&D? If he can choose
how many he accesses, at what point in time does he choose?
The Runner may choose how many additional cards he is
accessing, but this decision occurs before he accesses the
first card (at the beginning of step 4.5 of a run). With 3 virus
counters on Medium, the Runner must access at least one card
and may access up to 3.
Does this also apply to HQ Interface & The Maker's Eye, or is it mandatory? The wording on the two cards are different.
Medium:
Each virus counter after the first on Medium allows you to access 1 additional card from R&D whenever you access cards from R&D.
HQ Interface
Whenever you access cards from HQ, access 1 additional card from HQ.
The Maker's Eye
Make a run on R&D. If successful, access 2 additional cards from R&D.
Is it the "allows you to" on Medium that makes it optional or do you always have a choice of how many cards you access after the first on R&D and HQ?
Posted at

In a word, yes. Extra cards from The Maker's Eye and HQ Interface are mandatory, while those from Medium and Nerve Agent are optional (the latter are decided before accessing any card).