For more Shoal Shell code implementation technical details, you can review the articles about the Shoal Shell on CodeProject:
Powerful ShellScript for bioinformatics researchers
The ShellScript is originally developed for the debugging of my "genome-in-code" virtual cell simulation engine, but now it becomes a script language for a .Net program.
http://www.codeproject.com/Articles/820854/Powerful-ShellScript-for-bioinformatics-researcher
Guide line of integrated ShellScript with R Hybrid programming
The idea of hybrids the R script and my shellscript is awesome, and hybrid the shellscript with R can extends the function of my script and I also can write two type of the programming language both in one script file. Incredible thing! Right?
http://www.codeproject.com/Articles/832975/Guide-line-of-integrated-ShellScript-with-R-Hybrid
Wiki page: [Hybrid Scripting Guide Line]