The JSON output file consists of a minimum of one container, which is referred to as the
top-level container. All of the data, metadata, and additional containers are within the
top-level container. The type of top-level container is determined by the statement that
immediately follows the PROC JSON statement and the options that are enabled in that
statement.
JSON Containers
JSON output consists of two types of data structure containers:
JSON object container ({ })
begins with a left brace ({) and ends with a right brace (}). An object container
collects name-value ...
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