Cross-Platform Scripts
Cross-platform support lets a Tcl/Tk script run unchanged on UNIX, Windows, and Macintosh. However, you could still have platform dependencies in your program. The most obvious is if your script executes other programs or uses C-level extensions. These need to be ported for your script to continue to work.
File Name Manipulation
File naming conventions vary across platforms. New file operations were added to help you manipulate file names in a platform-independent manner. These are the file join, file split, and file pathtype operations, which are described on page 103. Additional commands to copy, delete, and rename files were added in Tcl 7.6
Newline Translations
Windows and Macintosh have different conventions for representing ...
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