sumark

seismic software,very useful

SUMARK - mark selected traces
sumark <stdin >stdout [options]
Required Parameters:
	none
Optional Parameters:
	mark = 1	=integer to have different mark value
	verbose = 0	=1 for verbose
	key = cdp	Key header word to window on (see segy.h)
	min = LONG_MIN	min value of key header word to mark
	max = LONG_MAX	max value of key header word to mark
	abs = 0		=1 to take absolute value of key header
			word
	j = 1		mark every j-th trace ...
	s = 0		... based at s  (if ((key - s)%j) == 0)
	count = ULONG_MAX	... up to count traces
	bad = none	don't mark traces with specified bad
			key values
On most 32 bit machines, LONG_MIN, LONG_MAX and ULONG_MAX are
about -2E9,+2E9 and 4E9 and are defined in general in limits.h