[sswaner]

Yes, and considering the Tractatus as a framework for a closed and finite set of linguistic rules, such as a domain specific language has great applicability.

For example, I flipped open my copy (yes I keep a copy on my desk) and opened to 4.122: rules to indicate internal and external relations between objects. Almost reads like a system requirements document.

[akozak]

A conception of language he famously threw out in the Philosophical Investigations!

[sswaner]

Yes, because humans don't operate in a limited, context explicit vocabulary. But your point doesn't destroy the value of Tractatus to be used for another purpose.