[Tango-artists] Priority Level Icon

[Nadia Mahlow]

Hello ,
Before I set out and create priority level icons I would like to know  
do they already exist somewhere. I was looking on past mailing list  
posts but could find nothing for priority level icon. If these icons  
already exist please let me know where they are?
There are four priority levels that we would like to state :  
critical, important, medium and low.

Thank you,
Regards
Nadia