====== GetCount ======

Function retrieve stream count or field count of given stream.

<code pcmi>
GetCount(Context [, Stream])
</code>
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|**Context**|Context (General, Video, etc.).|
|**Stream**|Stream number.|

Function return integer.

If **Stream** is omitted, function return the count of all streams in given context. If Stream defined, function return the count of all fields for this stream in given context.