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-rw-r--r--src/construct/partial_bom.rs12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/construct/partial_bom.rs b/src/construct/partial_bom.rs
index 155a1a3..d92c9c1 100644
--- a/src/construct/partial_bom.rs
+++ b/src/construct/partial_bom.rs
@@ -1,4 +1,14 @@
-//! To do.
+//! Byte order mark occurs at the start of the document.
+//!
+//! It’s the three bytes 0xEF, 0xBB, and 0xBF.
+//!
+//! ## Tokens
+//!
+//! * [`ByteOrderMark`][Token::ByteOrderMark]
+//!
+//! ## References
+//!
+//! * [`micromark/lib/preprocess.js` in `micromark`](https://github.com/micromark/micromark/blob/ed23453/packages/micromark/dev/lib/preprocess.js#L54-L60)
use crate::token::Token;
use crate::tokenizer::{State, Tokenizer};