Clarification on the docs

Hi, ALL,
On the https://www.postgresql.org/docs/17/sql-createindex.html#SQL-CREATEINDEX-STORAGE-PARAMETERS
its said:

[quote]
The optional WITH clause specifies storage parameters for the index.
Each index method has its own set of allowed storage parameters. The
B-tree, hash, GiST and SP-GiST index methods all accept this
parameter:
[/quote]

It states that each index method has its own set.

However only 3 out of predefined are given.

Moore over after that quote there is a list of parameters. But the
last phrase indicates a single parameter.

So how should I read that?

Is it a typo and it has to be plural, oor the list needs to be
ybindented and only one parameter should be there?

Thank you.