Half-sided cloners

[m-ender]

Should we add |\ and /| as devices which clone the input marble below and to one side? Having the copies at both sides is sometimes a bit unwieldy as it needs 3 columns, and you get a useless column below the cloner.

[rik-degraaff]

I support this, it ties in neatly with the way the the conditionals work.

[mrskin]

Although this is just syntactic sugar, I do like it.

Following this logic, can you think of anything || might do other than mimic an empty cell?