When I do git clone; few directories are empty.. but when I browse through same directories on github.com they are non-empty ! Also, on github.com there is a special sign ( not a folder ) one for these directories.. Looks like it is getting code from somewhere else ( some other repository ).
How do I get source code of those directories also when I do git clone.
Answer here was keyword submodule..Once I know this keyword; I can easily find answer trying to google.
