<from>
The element from points to a single token that is the start of a range of tokens to be selected
from
Formal Definition
(@val | @pos | (@val, @pos))
@val
@pos
Defined at: TAN-class-2.rng
TAN-class-2.rng
Used by: ~tok-ref-range
~tok-ref-range
In a ranged <tok> in a <reassign>, the token referred to by <from> must precede the one referred to by <to>.
<tok>
<reassign>
<to>