5. Delaglio, et al. (2005) NMRPipe: a multidimensional spectral processing system based on UNIX pipes. J. Biomol. NMR. 6, 277-293.
Screenshot of the CONNJUR workflow-builder:
The user begins by adding processing 'actors' (large boxes) with 'portfolios' (small boxes) to the screen.
Workflows are created by connecting the output portfolio of one actor to the input of another.
The directionality of the workflow is left to right.
As illustrated in the above workflow, an output portfolio can be used as input to many actors, producing a forked workflow.
Actors provide the modular processing desirable for NMR spectral reconstruction.
At any node along the workflow, intermediate data can be saved, viewed or exported.

Actors are configured by double clicking their icons.

Click to enlarge.
Mousing over a portfolio shows the first fid.

Click to enlarge.
The NMRDraw actor is used to start NMRDraw to visualize the entire spectra.
References
6. http://www.rowland.org/rnmrtk/toolkit.html