Program sfcausint | Causal integration on the first axis. 
[SYNOPSIS]
sfcausint < in.rsf > out.rsf adj=n
[COMMENTS]

December 2013 program of the month:
http://ahay.org/blog/2013/12/01/program-of-the-month-sfcausint/

[PARAMETERS]
bool    | adj | =n |  [y/n] | 	if y, do adjoint integration 
[DIRECTORY]
system/generic
