Card Types¶

Basic (Front / Back)¶

The simplest card. Front and back separated by ***:

```osmosis
What is the powerhouse of the cell?
***
The mitochondria
```

Both front and back support full markdown — bold, italic, code, images, LaTeX.

Bidirectional¶

Generates two cards, one in each direction. Add bidi: true:

```osmosis
bidi: true

Bonjour
***
Hello
```

This creates:

• Forward: "Bonjour" "Hello"
• Reverse: "Hello" "Bonjour"

Each direction is scheduled independently.

Type-In¶

Requires you to type the answer instead of flipping the card. Add type-in: true:

```osmosis
type-in: true

Spell the French word for "hello"
***
Bonjour
```

You can combine both flags for bidirectional type-in cards:

```osmosis
bidi: true
type-in: true

Bonjour
***
Hello
```

Cloze Deletion¶

Blank out terms in a sentence using ==term== or **term** markers:

```osmosis
==Mitochondria== are the ==powerhouse== of the ==cell==
```

This generates three cards, one per deletion:

Each card blanks one term while leaving the others visible. All cards share the same back: the full text.

Code Cloze¶

Blank out lines of code using comment annotations. Works with any programming language.

Single Line¶

Add osmosis-cloze in a comment at the end of the line:

````osmosis
```python
def greet(name):
    return f"Hello, {name}"  # osmosis-cloze
```
````

The marked line shows as ________ on the front (preserving indentation). The comment marker is stripped from the back.

Multi-Line Region¶

Wrap a region with osmosis-cloze-start and osmosis-cloze-end:

````osmosis
```python
def fibonacci(n):
    if n <= 1:
        return n
    # osmosis-cloze-start
    a, b = 0, 1
    for _ in range(2, n + 1):
        a, b = b, a + b
    return b
    # osmosis-cloze-end
```
````

The entire region becomes a single ________ on the front. Marker lines are removed from both front and back.

Multiple Regions¶

You can mix single-line and multi-line markers in the same fence. Each region becomes a separate card:

````osmosis
```python
def fibonacci(n):
    if n <= 1:
        return n  # osmosis-cloze
    # osmosis-cloze-start
    a, b = 0, 1
    for _ in range(2, n + 1):
        a, b = b, a + b
    return b
    # osmosis-cloze-end
```
````

This generates two cards — one blanking the return n line, and one blanking the loop body.

Supported Comment Styles¶

The osmosis-cloze marker works with any comment syntax:

Inserting Cards via Command Palette¶

Use the command palette for quick card insertion: