Board Thread:Lua Help/@comment-166269-20150217184425/@comment-24473195-20150302220119

Indeed. Meanwhile, it wouldn't be hard to create a module that can store this information, and then all we'd need to do is:

local frame = require("Module:VirtualFrame");

frame.setChild("Baby","World");

frame.setParent("Girl,"Boy");

p.HelloWorld(frame);