This web content covers a wide range of topics related to Tcl programming, from basic concepts such as simple text output and variable assignments to more advanced topics like regular expressions and file access. One surprising aspect is the use of grouping arguments with different symbols like “”, {}, and []. The content also delves into looping, variable scope, data structures like lists and dictionaries, and invoking subprocesses. There is also a focus on debugging and error handling, along with information on channel I/O, time and date functions, and working with child interpreters. The guide provides a comprehensive overview of Tcl programming for beginners and experienced users alike.
https://www.tcl-lang.org/man/tcl8.5/tutorial/tcltutorial.html