Oooops big problem in zigzag implementation

[Mark-Jason Dominus <mjd@xxxxxxxxxx>]

There is no efficient way to find out what links there are from a
particular cell.  You have to grovel over the entire database looking
for the links.

This isn't a problem with the concept; it's only an implementation
problem.  But it is something to watch out for when you design the
real implementation.

	
Mark-Jason Dominus 	  			               mjd@xxxxxxxxxx