Doesn't this generate a number of source lines?

[Profound Logic]

Question:
Doesn’t this generate a huge number of source lines than normal way?

Answer:
No, the RPG code for a Rich UI program will contain the same number of lines as a normal RPG program.

If you are referring to the DDS metadata, the metadata lines of code are automatically created by the Visual Designer. It is not something you would ever edit in an editor.