'''Backtracking and Constraints in Tcl-BC''' at USENIX Fourth Annual Tcl/Tk Workshop Monterey, California, July 1996 Dayton Clark and David M. Arnow Dept. of Computer and Information Science Brooklyn College {dayton,arnow} @sci.brooklyn.cuny.edu ABSTRACT: Tcl is extended to include backtracking controls and a facility for asserting constraints. This increases its flexibility in several domains and opens the possibility for its use in constraint-based logic programming applications and, conversely, applying constraint-based logic programming techniques to more traditional script language domains. The backtracking extensions are written entirely in Tcl itself, a fact which speaks well for Tcl's own extensibility. Full paper at [http://www.usenix.org/publications/library/proceedings/tcl96/full_papers/clark/index.html] Source code bc.tcl (.tgz) at [http://wiki.tcl.tk/_repo/bctcl.tgz] [George Petasis]: An updated version of bc.tcl which runs under Tcl 8.4 can be found at: Page: [https://www.ellogon.org/petasis/index.php/downloads/category/19-various-packages] bc.tcl: [https://www.ellogon.org/petasis/index.php/downloads/category/19-various-packages?download=8:bc-tcl] <> Dev. Tools