[...]: traffic lights, flags, a soldier’s salute, a nod of affirmation, heraldry, hieroglyphics, chemical formulas, numbers.
Answer
Permanent symbols
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Parent (intermediate) annotation
Open it Temporary symbols: signals adopted by a football team, the password necessary to get through military lines, school or team colors.
Permanent symbols: traffic lights, flags, a soldier’s salute, a nod of affirmation, heraldry, hieroglyphics, chemical formulas, numbers.
Original toplevel document (pdf)
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Summary
status
not learned
measured difficulty
37% [default]
last interval [days]
repetition number in this series
0
memorised on
scheduled repetition
scheduled repetition interval
last repetition or drill
Details
No repetitions
Discussion
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