It isn't exactly modern project management software!
I now understand that the terminology derives from something from the 1970's 'a 1970's alternative to traditional project management'.
Today, it is quite normal to parcel out sub-tasks, aka 'smaller and workable stories'.
There is the more user friendly, .NET cross platform Visual Studio from Microsoft, for example.
Taff,
He who comes from the days' when 64KB of RAM really was enough.
(Not to mention when five bits and and a big roll of paper tape did the trick (-:).