What is the format of the input string

"String representation of the Matrix3D" How about an example. Is it comma separated? Blank delimited? Very vague description of parameter.

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* ID: b792b5c8-4d63-3234-3857-eea713553862
* Version Independent ID: fc3294e0-0c60-4c86-4da1-f96de86b5fad
* Content: [Matrix3D.Parse(String) Method (System.Windows.Media.Media3D)](https://docs.microsoft.com/en-us/dotnet/api/system.windows.media.media3d.matrix3d.parse?redirectedfrom=MSDN&view=netframework-4.5.2#System_Windows_Media_Media3D_Matrix3D_Parse_System_String_)
* Content Source: [xml/System.Windows.Media.Media3D/Matrix3D.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.Windows.Media.Media3D/Matrix3D.xml)
* Product: **dotnet-api**
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* Microsoft Alias: **dotnetcontent**