Vlan-id for hosts amd html-Pages in hotspot

From RouterOS Release 6.48 Changelog
https://mikrotik.com/download/changelogs#show-tab-tree_1-id-25325877d7527430993e060729ac5601:


*) hotspot - added “vlan-id” parameter support for hosts and HTML pages;

What does it mean? Can’t find any vlan-id for users (profile) to get users on the same hotspot connected to different vlans… (And how does might it work - do we need to connect the hotspot to a bridge with all vlans on it? Or does the user get routed to an vlan-interface with that vlan-id?

On the other hand - I do not find any possibility to write or read a vlan-id anywhere in the hotspot configuration (Server, User, Walled Garden, IP Bindings or their profiles - if existing).

Can anybody explain it to me?