The package enables the user to connect information, and to place labels, without knowing (in advance) the actual positions of the items to be connected, or where the connecting line should go.

The macros are useful for making graphs and trees, mathematical diagrams, linguistic syntax diagrams, and so on.

The package contents were previously distributed as a part of the pstricks base distribution; the package serves as an extension to PSTricks.

The authors are Timothy Van Zandt, Michael Sharpe and Herbert Voß. The package is Copyright © 2009-2014 Herbert Voß.