This page has 3 items that are between parentheses, there is an explanation why they are used this way ?
https://www.postgresql.org/docs/devel/functions-json.html#FUNCTIONS-SQLJSON-TABLE Each syntax element is described below in more detail. *context_item*, *path_expression* [ AS *json_path_name* ] [ PASSING { *value* AS *varname* } [, ...]] The input data to query (*context_item*), the JSON path expression defining the query (*path_expression*) with an optional name (*json_path_name*), and an optional PASSING clause, which can provide data Why (*context_item*), (*path_expression*) and (*json_path_name*) are inside a parentheses ? This is not usual when explaining any other feature. regards Marcos
