TODO - seeds germane, yet not germinated
The following functionality will be supported in the next few releases.
Depth beyond which we don't venture into a structure.
Has no effect when
Data::Dumper::Purity is set.
(useful in debugger when we often don't want to see more than enough).
Dump contents explicitly up to a certain depth and then use names for cross-referencing identical references. (useful in debugger, in situations where we don't care so much for cross-references).