more examples for PORT please

would be nice to see more examples like
https://www.contoso.com/Customers/1
https://www.contoso.com:8080/Customers/2?etc=morestuff
ftp://www.contoso.com/Customers.csv
ftp://www.contoso.com:21/Customers.csv
file://c/d/e/f.txt

with the results in a nice commented-out block below the code (instead of current pre-code)
perhaps also refer readers to C:\Windows\System32\drivers\etc\services or the W3C/IETF/etc urls

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#### Document Details

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* ID: 8c4e7216-6657-6bde-38d6-cfae68120065
* Version Independent ID: ad21831f-7f00-5bc6-9358-b1448fd9a22f
* Content: [Uri.Port Property (System)](https://docs.microsoft.com/en-us/dotnet/api/system.uri.port?view=netframework-4.7.2)
* Content Source: [xml/System/Uri.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System/Uri.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**