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220ee52967
@ -131,7 +131,7 @@ Chunk Payload: _Chunk Size_ bytes
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: The data payload. If _Chunk Size_ is odd, a single padding byte -- which MUST
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: The data payload. If _Chunk Size_ is odd, a single padding byte -- which MUST
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be `0` to conform with RIFF -- is added.
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be `0` to conform with RIFF -- is added.
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**Note**: RIFF has a convention that all-uppercase chunk FourCCs are standard
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**Note:** RIFF has a convention that all-uppercase chunk FourCCs are standard
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chunks that apply to any RIFF file format, while FourCCs specific to a file
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chunks that apply to any RIFF file format, while FourCCs specific to a file
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format are all lowercase. WebP does not follow this convention.
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format are all lowercase. WebP does not follow this convention.
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@ -220,7 +220,7 @@ use another conversion method, but visual results may differ among decoders.
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Simple File Format (Lossless)
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Simple File Format (Lossless)
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-----------------------------
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-----------------------------
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**Note**: Older readers may not support files using the lossless format.
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**Note:** Older readers may not support files using the lossless format.
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This layout SHOULD be used if the image requires _lossless_ encoding (with an
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This layout SHOULD be used if the image requires _lossless_ encoding (with an
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optional transparency channel) and does not require advanced features provided
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optional transparency channel) and does not require advanced features provided
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@ -262,7 +262,7 @@ and height of the canvas.
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Extended File Format
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Extended File Format
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--------------------
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--------------------
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**Note**: Older readers may not support files using the extended format.
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**Note:** Older readers may not support files using the extended format.
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An extended format file consists of:
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An extended format file consists of:
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@ -290,12 +290,12 @@ up of:
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For an _animated image_, the _image data_ consists of multiple frames. More
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For an _animated image_, the _image data_ consists of multiple frames. More
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details about frames can be found in the [Animation](#animation) section.
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details about frames can be found in the [Animation](#animation) section.
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All chunks necessary for reconstruction and color correction, that is, 'VP8X',
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All chunks necessary for reconstruction and color correction, that is 'VP8X',
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'ICCP', 'ANIM', 'ANMF', 'ALPH', 'VP8 ', and 'VP8L', MUST appear in the order
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'ICCP', 'ANIM', 'ANMF', 'ALPH', 'VP8 ' and 'VP8L', MUST appear in the order
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described earlier. Readers SHOULD fail when chunks necessary for reconstruction
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described earlier. Readers SHOULD fail when chunks necessary for reconstruction
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and color correction are out of order.
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and color correction are out of order.
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[Metadata](#metadata) and [unknown chunks](#unknown-chunks) MAY appear out of
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[Metadata](#metadata) and [unknown](#unknown-chunks) chunks MAY appear out of
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order.
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order.
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**Rationale:** The chunks necessary for reconstruction should appear first in
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**Rationale:** The chunks necessary for reconstruction should appear first in
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@ -401,7 +401,7 @@ Background Color: 32 bits (_uint32_)
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around the frames, as well as the transparent pixels of the first frame.
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around the frames, as well as the transparent pixels of the first frame.
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The background color is also used when the Disposal method is `1`.
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The background color is also used when the Disposal method is `1`.
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**Notes**:
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**Note**:
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* The background color MAY contain a non-opaque alpha value, even if the
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* The background color MAY contain a non-opaque alpha value, even if the
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_Alpha_ flag in the ['VP8X' Chunk](#extended_header) is unset.
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_Alpha_ flag in the ['VP8X' Chunk](#extended_header) is unset.
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