- Fix markup.
- Fix markup.

- Somewhat improve wording.

- Change the layout of the EXAMPLES section so that descriptions
  come before example, as in most other manpages.

- Fix a bad example that edits a label using a `c' partition.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase