print - Print object to a stream
ostream any <- -> ostream
cerr [1 2 3] print endl ; -> <arraytype>
Alternatives: You can use <- (undocumented),
which is the same as print.
docu by Marc Oliver Gewaltig and Sirko Straube
/var/www/debian/nest/nest-simulator-2.20.0/sli/sli_io.cc