If you want to change selection, open original toplevel document below and click on "Move attachment"
Parent (intermediate) annotation
Open it Then read; not passively sliding your eyes over the words, but actively engaging the text, trying to find the answer to your question. Be cautious, however, that you don't end up skimming for the answer to your question and missing other important information.
Original toplevel document (pdf)
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last interval [days]
repetition number in this series
scheduled repetition interval
last repetition or drill
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