> IIRC these assignments in \paper and \layout and \header blocks are
> functionally equivalent to defining a variable in Scheme like
>
> #(define left-margin 100)
Yes.
> The kind of \unset you’re asking for requires the previous value to
> have been saved onto some stack, which I doubt exists/is accessible
> here.
Ah, ok. Makes sense. I've read that some Scheme dialects provide
means to undefine variables (on the top-level, that is); Guile
apparently does not.
> Maybe you could work around by calculating left-margin and
> right-margin:
>
> \paper {
> left-margin = #(/ (- paper-width line-width) 2)
> right-margin = #left-margin
> }
D'oh, thanks!
Werner
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