What is vim?

90 processes: 84 sleeping, 3 running, 1 zombie, 2 stopped
CPU states: 8.3% user, 91.6% system, 0.0% nice, 0.0% idle
Mem: 506524K av, 482848K used, 23676K free, 0K shrd, 105936K buff
Swap: 1052216K av, 31612K used, 1020604K free 245416K cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
16866 root 15 0 2444 2444 1660 R 99.8 0.4 2638m vim
24801 root 10 0 1056 1056 824 R 0.1 0.2 0:00 top
1 root 8 0 476 432 412 S 0.0 0.0 0:14 init
2 root 9 0 0 0 0 SW 0.0 0.0 0:00 keventd
3 root 19 19 0 0 0 SWN 0.0 0.0 0:19 ksoftirqd_CPU0
4 root 9 0 0 0 0 SW 0.0 0.0 1:17 kswapd
5 root 9 0 0 0 0 SW 0.0 0.0 1:13 bdflush
6 root 9 0 0 0 0 SW 0.0 0.0 0:18 kupdated
9 root 9 0 0 0 0 SW 0.0 0.0 0:00 khubd
10 root 9 0 0 0 0 SW 0.0 0.0 2:56 kjournald
150 root 9 0 0 0 0 SW 0.0 0.0 0:01 kjournald
151 root 9 0 0 0 0 SW 0.0 0.0 3:50 kjournald
152 root 9 0 0 0 0 SW 0.0 0.0 0:29 kjournald
153 root 9 0 0 0 0 SW 0.0 0.0 4:47 kjournald
154 root 9 0 0 0 0 SW 0.0 0.0 5:05 kjournald
850 root 9 0 548 508 460 S 0.0 0.1 0:13 syslogd
855 root 9 0 428 372 372 S 0.0 0.0 0:00 klogd