Documentation for OrderedDictionary<TKey,TValue>

[shmuelie]

Describe the issue or suggestion

The documentation for OrderedDictionary<TKey,TValue> does not include any information about how it differs from using a Dictionary<TKey, TValue>. The summary of "Represents a collection of key/value pairs that are accessible by the key or index." suggests that you can access elements in their added order but to do so requires casting to IList<TValue> which isn't obvious.

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