Why does "draw" not work when run inside ESS + emacs (but works fine using the interpreter conventionally "julia myfile.jl")?
using Gadfly
draw(SVG("output.svg", 6inch, 3inch), plot([sin, cos], 0, 25))
julia> ERROR: draw not defined
0.3.0-prerelease+1940
ess-20140120.43
Gadfly 0.2.5
Emacs 24.3.1