If structures places data to stack why we do not getting stackoverflow on array of structures?

[Suliman via Digitalmars-d-learn]

On Wednesday, 16 August 2017 at 13:41:29 UTC, Biotronic wrote:
> On Wednesday, 16 August 2017 at 12:50:07 UTC, Suliman wrote:
>>> MyStruct[] is actually a struct similar to this:
>>>
>>> struct MyStruct[] {
>>>     MyStruct* ptr;
>>>     size_t length;
>>> }
>>>
>>> That struct is placed on the stack, but the data it points 
>>> to, via the ptr field, is heap allocated.
>>
>> What is struct? Just name and size?
>
> I'm sorry, I don't understand what you're asking. Can you 
> please repeat with more information?
>
> --
>   Biotronic

I am trying to understand what structure is. It's name + 
associated with this name data? I can't understand for my self 
what mean no put structure to stack. Just put it's name to it or 
something another?