Need Line 

Type - Term
Description: Shown on an OV-2, a Need Line documents the requirement to exchange information between Operational Nodes. Arrows on Need Lines indicate the direction of the information flow. Each arrow only indicates that there is a need for some kind of information transfer between the two connected nodes, not how the information transfer is implemented. 
Acronym:  
Comments: Source: OV-2/OV-3 Product Team