[R] meta-analysis normal quantile plot metafor

[Ricc]

Hello,

I once used the metawin software to perform a meta-analysis (see
metawinsoft, Rosenberg et al.) and produced normal qqplot to test for
a potential bias in the dataset.
I now want to re-use the same dataset with the package metafor by W.
Viechtbauer (great package btw).

I run the qqnorm.rma.uni function. I use standardized effect sizes as
in metawin.

QQplot generated with metafor differs from the plot obtained with
metawin: most of the datapoint fall outside the confidence envelope
(using the same confidence level). I don't understand very well how
the "pseudo confidence envelope" was created in metafor. Is it more
conservative than that from metawin or created using the package
envelope ? Unfortunately I do not have access to metawin's code so
that I cannot compare implementations but the manual let me think that
metawin print classical confidence interval...

Thanks for input !
Ricc

More precisions:
R version 2.13.1 (2011-07-08)
Platform: x86_64-pc-linux-gnu (64-bit)
metafor_1.6-0