DOC: Document no ts_out support with rec enums

rust/dbn/src/enums.rs

@@ -115,14 +115,14 @@ impl From<InstrumentClass> for char {
 impl InstrumentClass {
     /// Returns `true` if the instrument class is a type of option.
     ///
-    /// NOTE: excludes [`Self::MixedSpread`], which *may* include options.
+    /// Note: excludes [`Self::MixedSpread`], which *may* include options.
     pub fn is_option(&self) -> bool {
         matches!(self, Self::Call | Self::Put | Self::OptionSpread)
     }
 
     /// Returns `true` if the instrument class is a type of future.
     ///
-    /// NOTE: excludes [`Self::MixedSpread`], which *may* include futures.
+    /// Note: excludes [`Self::MixedSpread`], which *may* include futures.
     pub fn is_future(&self) -> bool {
         matches!(self, Self::Future | Self::FutureSpread)
     }

rust/dbn/src/record_enum.rs

@@ -4,7 +4,10 @@ use crate::{
     TradeMsg,
 };
 
-/// An owned DBN record type of flexible type.
+/// An owned DBN record type of flexible type. Unlike [`RecordRef`], this type allows
+/// `match`ing.
+///
+/// Note: this type does not support `ts_out`.
 #[derive(Debug, Clone)]
 pub enum RecordEnum {
     /// An market-by-order message.
@@ -37,6 +40,8 @@ pub enum RecordEnum {
 
 /// An immutable reference to a DBN record of flexible type. Unlike [`RecordRef`], this
 /// type allows `match`ing.
+///
+/// Note: this type does not support `ts_out`.
 #[derive(Debug, Copy, Clone)]
 pub enum RecordRefEnum<'a> {
     /// A reference to a market-by-order message.