DataBlock names vs. Plotter

Some Plotter functions require DataBlock names as argument (as str).
A block can be given a name when created (any user-defined string).
But this is not the name the Plotter expects - the Plotter relies on the fixed names drawn from a dictionary defined in Dataset.data_blocks, which uses the constants:

design_par_long = "design_parameters"
perf_attribute_long = "performance_attributes"
design_rep_long = "design_representation"

This is confusing, especially because the names in constants are rather for "internal" use and are not really exposed to the user as far as I remember. The given names are the ones the user will think are expected.