More On The Tcl Language
 
 
Rich set of built-in commands:
- Variables, associative arrays, lists.
 - C-like expressions.
 - Conditionals, looping:
if {$x < 3} {
    puts "x is too small"
}
 - Procedures.
 - Access to UNIX files, subprocesses.
 
Only representation is strings:
- Easy access from C.
 - Programs and data interchangeable.