Why is MapML inline in HTML important?

[Malvoz]

I haven't seen the arguments made for MapML inline in HTML. It would be nice to discuss pros and cons, and why it is important.

I think inline MapML increases the overall complexity of MapML:

1. Browser implementation complexity? Maybe @zcorpan can help answer this.
2. Polyfill code complexity/size
3. Specification complexity:
   • Tag omission for both text/html and text/mapml as opposed to only text/mapml
   • Conditional contexts in which elements can be used
   • Probably other things

I think 2. and 3. aren't great arguments against MapML inline in HTML, but perhaps worth taking into consideration.

[prushforth]

I think inline mapml is important because I think security considerations will preclude getting events and DOM access to remote mapml content, tbd. And a DOM API is essential, as this the foundation of programmability. I think the need for inline MapML is or should be covered by requirements relating to Client-Side Mapping APIs