Ways to load a subfile...

Hi PGMRs,

(Hope this is "RPG" enough for this list)

I've been asked the following question by prospective employers...

"What are the three ways to load a subfile?"

I think that they are asking the question wrong, to the best of my knowledge
there are only two ways to load a subfile, 1) write the subfile records or
2) Initilize the subfile (filling it with blanks/zeros).

I assume that the question should be... "What 3 sources can the data come
from to load a subfile?" (1. program generated 2. screen input 3. external
file, data area, etc...)

Unless I've missed something along my route. Any ideas?

Capt.j