Grammatical mistake/unclear wording in "Changes to data flow in Run 2"

[alexpearce]

Migrated from lhcb/starterkit#26, by @KonstantinSchubert.

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The text to the section "Changes to data flow in Run2" contains the following sentence:

That is to say, any tracks or detector responses that don't form part of the decay that the trigger lines uses to evaluate its selection is thrown away.

"Trigger lines" is plural, but the following verb "uses" is singular. Unfortunately I cannot correct this because I really don't know what the right answer is.

Are tracks really thrown away until they contribute to trigger any of the L0, Hlt1, oder Hlt2 lines? Doesn't that throw away a lot of good TIS events?

[alexpearce]

Addressing the last question: yes, TIS events are thrown away by definition. The Turbo stream is equivalent to the stripping, in this sense: you can't ask for events that are ‘stripping TIS’. You have to compute the trigger efficiencies (assuming that's what you'd like TIS for) using simulation.