Thanks for the reference!

I've had a look at a lot of examples and it seems great, but I really dislike the idea of homodirectional delimiters because I fear it unnecessarily complicates formatting and introduces a pointless risk of collision.

That's why I want to only use two kinds of delimiter:

- EOL, unless content is continued on the same indentation immediately without a gap, defines a block separation

- Strictly heterodirectional delimiters, e.g. () [] {} <>, define inline blocks and nested blocks, or can provide a bypass of the first rule

I feel that this design decision will save a lot of time, even though

  *italics*

is technically less characters than

  {i italics}

(however, in Polymath you can also just use a newline and save a character:)

  i italics