zulip/help/include/mentions-examples.md

What you type

Users: @**Bo Lin** or @**Ariella Drake|26** (two `*`)
User group: @*support team* (one `*`)
Silent mention: @_**Bo Lin** or @_**Ariella Drake|26** (`@_` instead of `@`)
Wildcard mentions: @**all**, @**everyone**, @**channel**, @**topic** (two `*`)

!!! tip ""

A `|` followed by a user ID is inserted automatically when you select a
user from the typeahead suggestions, if there are two users with the same
name in the organization.

What it looks like