Thanks for all the replies on this everyone - I'm a little the wiser
now.
It was in a function I noticed the difference and I can see how it'd
be useful to be able to create a new block with the first call of a
function while having the subsequent calls not clear the block's
contents.
This is what I was actually trying to do...
block: [[[]]]
(for inserting stuff into later), and while the following works as I
wanted...
block: to-block "[[]]"
I notice that this doesn't...
block: to-block [[[]]]
Because, I assume, the inner blocks are not created anew?
Carl Read.
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