+#define watch_trivial_usage \
+ "[-n <seconds>] COMMAND..."
+#define watch_full_usage \
+ "Executes a program periodically.\n" \
+ "Options:\n" \
+ "\t-n\tLoop period in seconds - default is 2."
+#define watch_example_usage \
+ "$ watch date\n" \
+ "Mon Dec 17 10:31:40 GMT 2000\n" \
+ "Mon Dec 17 10:31:42 GMT 2000\n" \
+ "Mon Dec 17 10:31:44 GMT 2000"
+