tlt <- generate_testlet()
tlt$testlet_id <- "New-Testlet-ID-111"
tlt$content <- "Algebra"
# Set all misc fields like this
tlt$misc <- list(passage_text = "This is a reading passage.",
passage_lexile = 450)
tlt$passage_text
# Add a misc field
tlt$passage_language <- "En-US"
# Remove a misc field
tlt$passage_language <- NULL
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