By arrays you mean something like this? array set foo { a 1 b 2 c 3 } If the inability to comment out entries here is a problem, that's also s

By arrays you mean something like this? array set foo { a 1 b 2 c 3 } If the inability to comment out entries here is a problem, that's also something you can fix, you can write something like proc decomment body { … } such that you can then write the following and it will remove commented lines: array set foo [decomment { a 1 # b 2 c 3 }]