= How to pick a slice name =

In general, slice names should be:
     * at most 19 characters
     * contain only the following characters: a-z,A-Z,0-9,- (uppercase and lowercase alphanumeric characters and dash)
     * not start with '-' (dash) 

Note: The '_' (underscore) character can not be used.

While enforcement of these rules is not consistent across all parts of GENI, following these rules will ensure compatibility throughout GENI.