What's_a_Timba_'record'?

I notice that many Timba scripts are able to use a 'record' structure to define things. Since 'record' isn't a data structure supplied with 'standard' python, I'm assuming that 'record' is being defined somewhere in Timba land. But I can't find where this is done - can you point me to the location?

It's imported from Timba.dmi (OCTOPython/src/dmi.py). A record is basically a type-limited dict, restricted to data types recognized by the C++ kernel.