Problem space:  u-construct, s-construct  and
generator
   -   Operator Overview: 
   
-  This operator may form part of the u-constuctor or s-constructor being constructed. It connects 
	assigners to receivers in the syntactic or semantic A/R set. 
	
    
    
-   Operator Proposal: 
   
-  Link operator proposals are returned by the generator space. The operator 
	carries attributes for the assigner, role and receiver.
   
    
-   Operator Application: 
   
-  The application of this operator removes the receiver from the A/R set, creates the
	link and annotates the role attribute of the assigner with the receiver (or in the
	case of an adjoin link in syntactic comprehension, creates the adjoined-node and annotate the assigner with 
	^annotation adjoined) and  updates the AGR features of the assigner and/or the 
	receiver. It also removes the word associated with the receiver from ^receivers-id
	so that the word is no longer available for linking.
	Note that because of this application, implementation chunks are built as by-products
	and they will fire eventually as part of the u-constructor or s-constrcutor  when it gets proposed in
	the top-space.
    
    
-   Operator Reconsider: 
   
-  The operator is reconsidered when the assigner is augmented with
	the receiver in the role attribute (or with the ^annotation adjoined in the
	case of an adjoin link).
Productions are in file: 
u-construct.link.soar and
s-construct.link.soar
 Back to the operator hierarchy.
 This page written by Jill Fain Lehman (jef@cs.cmu.edu) 
	and Han Ming Ong(hanming@cs.cmu.edu)  
 Updated by Mark H Smith