🚀 go-pugleaf

I'm curious about the way binaries are stored prior to being loaded for
execution, and about what the loader does to the program being loaded.

I understand that a binary contains three sections--a text section,
a data section, and a bss section.   The text section and the data section
I think are pretty clear; the text is the program, the data is, well, data.

But what is the bss section for?  And what does the loader do to addresses
in all three sections?  

Additionally, what is the exact format that these three sections are arranged
in.


Thanks,
Ron