[ic] Usertag and permissions on create file

[m.mescoli at omnib.it]

Perl beginner.

With an usertag i create a png plot file with umask permission 0660. 
This permissions do not permits apache to read the file and trasmit it 
to web clients. How create and write a file inside usertag with read 
permission for all ?

Thanks
Marco Mescoli