Thanks, please do not comment out your examples and use \donttest{} instead:
\examples{
examples for users and checks:
executable in < 5 sec
donttest{
further examples for users (not used for checks)
}
}
Please ensure that your functions do not write by default or in your
examples/vignettes/tests in the user's home filespace. That is not allow
by CRAN policies. Please only write/save files if the user has specified
a directory. In your examples/vignettes/tests you can write to
tempdir(). E.g.
myfile <- file.path(tempdir(), "ic.ics")
ic_write(ic, myfile)```