Relative module paths

In t2.jl I can use both import ..MyPkg and import ...MyPkg, is this a feature? It seems to be safe though, because Modules cannot contain modules with the same name.

MyPkg
├── Manifest.toml
├── Project.toml
└── src
    ├── MyPkg.jl
    ├── t1.jl
    └── t2.jl

MyPkg.jl:

module MyPkg
g(x) = 2 + x
include("t1.jl")
include("t2.jl")
end

t1.jl:

module SubMod1
f(x) = x^2
end

t2.jl:

module SubMod2
import ...MyPkg
import ..SubMod1
f2(x) = MyPkg.g(x) * SubMod1.f(x)
end