Single Filter tagged with multiple tags in Multi Select Faceting

[Zheng Lin Edwin Yeo]

Hi,

Regarding the Multi Select Faceting, there is a feature whereby we can have
a single filter tagged with multiple tags, like the following example:
fq={!tag=tag1,tag2,tag3}my_field:my_filter

However, I have not been able to figure out the use and advantage of this.
Anyone has any information on this? I am using Solr 7.4.0

Regards,
Edwin