Updated 2014-06-12 07:10:52 by pooryorick

A control structure is a programming language construct which provides the coder the means to direct the flow of program execution based on some criteria.

Some examples in Tcl are if, while, for, foreach, and switch (also case, but that's obsolete).

The Expect extension also defines new control structures.

Tcl is also fertile ground for creating new control structures.