4GLs don't have code
As an early adopter of 4GLs in 1983... 4GLs don't generate code - they are data structures that are interpreted at run time. Code generators are simply that - code generators. 4GLs still exist and are ideal for the kind of RAD espoused by proponents of iterative software development. Checkout www.revsoft.co.uk for a Windows based 4GL with a 27 year pedigree....