Make core dumps impossible. People will read your code. Your name is on it, so you want to be proud of it. This is like stopping work on a paper when what it says is correct, and not worrying at all about how it is said. Use grammatically correct structure.
All programming languages have a global namespace.
In Tcl, it's procedure names and global variables. Choose your names carefully. Use longer names that more specific, and more descriptive, like tkLogicAnalyzerMakeWindow. You cannot usefully search for these names in a text editor. Use longer more descriptive names.