Ordered list syntax.

[Daniel Axelrod]

All right. HTML does not allow lists inside paragraphs, how about these 
rules?

1. There must be a blank line between a paragraph and the start of a 
list.
2. If a sublist follows a list item that is not a paragraph, a blank 
line is not necessary before the sublist.
3. If a sublist follows a list item that *is* a paragraph, a blank line 
is necessary to separate the paragraph and the sublist. (This is really 
just rule 1.)

These would make it impossible for wrapping a paragraph to accidentally 
trigger the beginning of a list.

The only time a problem might occur is in wrapped non-paragraph list 
items:

	1. This is a list item.
	2. So's this.
	3. The number eight is written in Arabic numerals as
	8. It is written in roman numerals as VIII.
	4. Here is another list item.

I don't actually think this is a problem, however, because a *human* 
would mistake the `8. ` as a list item heading, until they read it in 
context. This means that if Markdown thought it was a list item, the 
person would look at their source document, realize that it really 
*did* look like a list item, and change the wrapping.


Another problem might this:

	1. This is a list item.
	2. So's this.
	3. The number eight is written in Arabic numerals as
	    8. It is written in roman numerals as VIII.
	4. Here is another list item.

Is that `8. ` part of the wrapped and indented list item, or is it a 
sublist? I also don't think this would be a huge deal, because the 
person will see that Markdown thought it was a nested list, look at 
their source document realize it *did* look like a nested list, and 
change it.

The problem with accidentally triggering lists is only outside of any 
list context. If a person has a normal paragraph that gets sliced and 
diced into list items, they will have a hard time figuring out what 
went wrong. On the other hand, if they have a list, they're going to be 
thinking in the context of a list, so they're going to be more careful 
with what looks like a list item, and what doesn't.

I don't think it's reasonable to expect Markup to read a document 
better than a human who's glancing over the document would.