Things to do. Any volunteers? :-)

- option: page or kB. What about blocks?

- option: mem -/+ buffers

- sort of continuous batch operation, with only ^L between pages

- add /proc/rtc, /proc/misc

- add third page for /proc/sys/

- should use tputs(), strictly speaking

- a third page with network info is in the works

[- fix -d with -n0 (seems to be fixed now)]
