= Section vs segment
We will get into more detail later, but it is good to have it in mind now:
* section: exists before linking, in object files.
One ore more sections will be put inside a single segment by the linker.
Major information sections contain for the linker: is this section:
* raw data to be loaded into memory, e.g. `.data`, `.text`, etc.
* or metadata about other sections, that will be used by the linker, but disappear at runtime e.g. `.symtab`, `.srttab`, `.rela.text`
* segment: exists after linking, in the executable file.
Contains information about how each segment should be loaded into memory by the OS, notably location and permissions.
See also:
* https://stackoverflow.com/questions/14361248/whats-the-difference-of-section-and-segment-in-elf-file-format
* https://stackoverflow.com/questions/23379880/difference-between-program-header-and-section-header-in-elf