erext rules:

1. empty lines are not buffered
2. one line is buffered before each block
3. blocks:
	a) /*S ... */
	b) //S
		S - "start tag"
4. start tags:
	* - regular block
	< - decl at the left
	    this blocks includes buffered line as a 'decl' field
	> - decl at the right
	    this blocks includes next line as a 'decl' field
	M - C method-style declaration after this block