Tags and flags
Besides the folder/deck hierarchy, there are two more ways to organize your flashes: tags and flags. The two serve different purposes.
Tags
You can add as many tags as you like to a card. Tags can be nested
with ::: for example, a tag like biology::cell::organelles actually
creates a three-level hierarchy of "biology" containing "cell" containing
"organelles." This is a second organizational layer, fully independent
of the folder/deck hierarchy: you can put the same card in a deck and
also mark it with several tags (a flash can only belong to one deck, but
it can carry multiple tags).
You add tags while editing a card, and in the Flashcard Browser you can search or filter by tag. We cover the full filtering interface in Settings and More → Flashcard Browser.
Flags
A flag is a colored marker you put on a flash: unlike a tag, it applies directly to the flash, not the card. Tsunagi offers 10 different flag colors (red, orange, yellow, green, teal, cyan, blue, indigo, purple, pink), and you can use each one however you like: build your own system, such as "these are hard," "revisit these," or "these came up on the exam."
You can flag a flash from the flag button on the study screen, or in bulk from the Flashcard Browser. To remove a flag, use the "no flag" option from the same place.
You've now seen Tsunagi's core concepts (folder, deck, card, flash, study screen, tag, flag). Next up is how you write your cards and flashes: the editor.