> For AI agents: the complete documentation index is available at https://docs.flashnerd.com/llms.txt, the full documentation bundle is available at https://docs.flashnerd.com/llms-full.txt. # Flashnerd glossary Start with the core concepts to see how your cards and study setup fit together. The remaining sections explain terms you may encounter while studying or changing settings. ## Core concepts ### Card A card is one study item made from the fields in its deck's template. For example, a vocabulary card might show `apple` on the front and `a fruit` on the back. Cards can also contain images, recordings, language annotations, and other content. See [Create and edit cards](https://docs.flashnerd.com/guide/cards/create-and-edit.md). ### Field A field is one named part of a card, such as **Term** or **Meaning**. Its type determines the content it supports, such as text, an image, or audio. Its side determines where it appears; the name alone does not decide this. A field can be placed on **Both** sides, **Front** only, **Back** only, or **Note**. Note content lives in the note section, which is available on the back side only. On the example card, the Term field contains `apple`. See [Field types](https://docs.flashnerd.com/reference/fields/index.md) and [Field settings and card sides](https://docs.flashnerd.com/guide/cards/field-settings.md). ### Template A template defines the structure shared by a deck's cards: field names, types, order, sides, and default settings. A deck has one template, and every card in that deck follows it. A vocabulary template might place a Text field named Term on Front and a Text field named Meaning on Back. The template defines those fields; each card supplies its own words. A card does not have to fill every field; you can leave some field values empty. Changing the deck's template can affect every card in that deck. Deleting a field removes that field and its stored values from every card in the deck. Use that when you want to drop the same unused text or values across the deck in one change. See [Templates and presets](https://docs.flashnerd.com/guide/cards/templates.md). ### Deck A deck is a collection of cards sharing a template. An _Everyday vocabulary_ deck could contain cards for `apple`, `water`, and `bread`. Decks live in **Home** and hold the content used by both practice and SRS. See [Decks and folders](https://docs.flashnerd.com/guide/library/decks-and-folders.md). ### Tag A tag is a label attached to a card for organization and filtering. You could tag the `apple` and `bread` cards with `food`, then use that same tag on relevant cards in other decks. Tags group cards without moving them out of their decks. See [Organize cards with tags](https://docs.flashnerd.com/guide/library/tags.md). ### Preset A preset is a saved configuration you can reuse for deck templates, SRS settings, search filters, or AI instructions. It does not contain your studied cards or review progress. Presets are useful when you want the same setup again without rebuilding it each time: a familiar card layout for new decks, the same search filters, copied SRS settings, or consistent AI instructions. For example, a _Simple vocabulary_ Deck Preset could save the Term-and-Meaning structure for creating more decks. A new deck receives its own template from a Deck Preset. Applying an SRS Preset also copies settings into the set. AI instruction presets work differently: a deck keeps its selection, and editing that preset changes the instructions used for future generation requests, without rewriting existing results or cards. See [Presets](https://docs.flashnerd.com/guide/settings/preferences.md) and [AI instruction presets](https://docs.flashnerd.com/guide/ai/instruction-presets.md). ### Set (SRS set) An SRS set links one or more decks for scheduled study using the set's review settings. A _Daily vocabulary_ set could link _Everyday vocabulary_ and _Travel phrases_. Each card has its own schedule, and the set uses the cards already in Home; it does not create another editable copy. A deck can belong to only **one SRS set at a time**. See [Start spaced repetition](https://docs.flashnerd.com/guide/srs/getting-started.md). ### Folder A folder organizes other items. In **Home**, an _English_ folder could contain your vocabulary decks and subfolders. In **SRS**, a separate _Language practice_ folder could contain your SRS sets and subfolders. Home folders and SRS folders are separate structures. See [Decks and folders](https://docs.flashnerd.com/guide/library/decks-and-folders.md) and [Manage SRS sets and folders](https://docs.flashnerd.com/guide/srs/manage-sets.md). ## Study and SRS | Mode | Purpose | | ------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Flashcard** | Practice a Home deck whenever you want. Reveal each answer, then mark **Pass** or **Failed**. See [Flashcard mode](https://docs.flashnerd.com/guide/practice/flashcard.md). | | **Matching** | Practice a Home deck by pairing two selected fields from the same card. See [Matching mode](https://docs.flashnerd.com/guide/practice/matching.md). | | **SRS** | Review due cards on a schedule. Your grades update when each card appears again. See [Start spaced repetition](https://docs.flashnerd.com/guide/srs/getting-started.md). | | Term | Meaning | | ---------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Front / Back / Both / Note** | Where a field belongs. Both uses it on both card sides; Note keeps it as note content rather than a front/back field. | | **SRS** | Spaced repetition, also called **FSRS**: reviewing cards over time using scheduled due dates informed by your answers. See [How spaced repetition works](https://docs.flashnerd.com/guide/srs/getting-started.md#how-spaced-repetition-works). | | **Due** | A card's scheduled review time has arrived, subject to the session's scope, limits, and eligibility rules. | | **Review ahead** | Allowing eligible cards into review shortly before their due time. | | **New / Learning / Review / Relearning** | Stages in a card's SRS progress. Relearning follows a lapse after a card has entered review. | | **Again / Hard / Good / Easy** | SRS answer grades describing how well you recalled the answer. These guide subsequent scheduling. | | **Suspended** | An SRS status with its own review-quota behavior. Suspended cards can still be selected when that quota allows them. | | **Disabled** | An SRS status that excludes the card from scheduled review. It does not mean the base card has been deleted. | | **Struggle** | A status associated with repeated difficulty and the set's struggle controls. See [card status](https://docs.flashnerd.com/guide/srs/card-status.md). | | **Desired retention** | The recall target used by scheduling. A higher target generally means shorter intervals and more review work. | | **Study day** | The local day used for SRS daily limits and study-day statistics, separated by **Next Day Starts At**. | ## Statistics | Term | Meaning | | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------ | | **Stability** | A model estimate related to how long a memory lasts before recall probability declines. It is not a direct measurement of knowledge. | | **Difficulty** | A model estimate of how difficult the card is for you to learn or retain. | | **Actual retention** | A statistic based on eligible recorded review outcomes. It is not the same as overall practice accuracy. | | **Estimated recall** | A model prediction of present recall probability, rather than an answer you have just given. | | **Unique cards** | Distinct cards in the measured period. Answering the same card several times can create several attempts but only one unique card. |