I was thinking that it would be nice to have [once] accept a single  
argument which would set the initial state of the object, just like  
[spigot].  But this means that it would have to be default closed  
like spigot, breaking backwards compatibility.  Do you mind if I make  
this change in abstractions/purepd/once.pd and add a warning message  
on load?
.hc
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The arc of history bends towards justice.     - Dr. Martin Luther  
King, Jr.