CLDR-18028 Fixed remaining items from TC meeting

docs/ldml/tr35.md

@@ -19,11 +19,6 @@
 
 This document describes an XML format (_vocabulary_) for the exchange of structured locale data. This format is used in the [Unicode Common Locale Data Repository](https://www.unicode.org/cldr/).
 
-_Note:_
-Some links may lead to in-development or older
-versions of the data files.
-See <https://cldr.unicode.org> for up-to-date CLDR release data.
-
 ### _Status_
 
 _This is a draft document which may be updated, replaced, or superseded by other documents at any time.
@@ -559,7 +554,11 @@ A _Unicode **BCP 47** locale identifier_ (<a name="unicode_bcp47_locale_id" href
     - a <a href="#unicode_script_subtag"><code>unicode_script_subtag</code></a>.
     - a "root" subtag (the "und" <a href="#unicode_language_subtag"><code>unicode_language_subtag</code></a> is used instead of "root").
 
-A well-formed _Unicode BCP 47 locale identifier_ is also a well-formed _BCP 47 language tag_. The reverse, however, is not guaranteed; a well-formed _BCP 47 language tag_ might not be a well-formed _Unicode BCP 47 locale identifier_.
+A well-formed _Unicode BCP 47 locale identifier_ is always a well-formed _BCP 47 language tag_.
+The reverse, however, is not guaranteed;
+a _BCP 47 language tag_ that contains an extlang subtag, an irregular subtag, or an initial 'x' subtag would not be a well-formed _Unicode BCP 47 locale identifier_
+— for details see [BCP 47 Conformance]#bcp-47-conformance).
+However, any _BCP 47 language tag_ can easily converted to a _Unicode BCP 47 locale identifier_ as specified in [BCP 47 Language Tag Conversion](#bcp-47-language-tag-conversion).
 
 A _Unicode **CLDR** locale identifier_ (<a name="unicode_cldr_locale_id" href="#unicode_cldr_locale_id">`unicode_cldr_locale_id`</a>) is a <a href="#unicode_locale_id">`unicode_locale_id`</a> that meets the following additional constraints:
 - [ wfc: The EBNF `sep` is restricted to only [_] in <a name="unicode_language_id" href="#unicode_language_id"><code>unicode_language_id</code></a> and <a href="#unicode_locale_id">`unicode_locale_id`</a>.]
@@ -4319,7 +4318,7 @@ Updates to [LDML Conformance](#Conformance) including
 
 ### Locale Identifiers and Inheritance Modifications
 - Clarified definitions of _Unicode BCP 47 locale identifier_ and _Unicode CLDR locale identifier_, moving them to [Unicode CLDR locale identifier](#unicode-locale-identifier)
-- Clarified useage of [Special Script Codes](#unicode-locale-identifier).
+- Clarified usage of [Special Script Codes](#special-script-codes).
 - Added definition of [Ordered Elements](#definitions), replacing the obsolete definition of _blocking_ elements.
 - Clarified the usage of the `path` attribute with [aliases](#element-alias).
 
@@ -4328,7 +4327,7 @@ Updates to [LDML Conformance](#Conformance) including
 Significant updates to [Message Format](tr35-messageFormat.md#Contents) 
 - Removed all of the reserved and private use syntax constructs, simplifying the grammar.
 - Changed the structure of the .match (selector) to require use of local or input declarations. This is a breaking change for existing messages.
-- Added support for bidirectional isolates and marks and clarified whitespace handling to better enable messages that contains right-to-left identifiers and text.
+- Added support for bidirectional isolates and marks, and clarified whitespace handling to better enable messages that contains right-to-left identifiers and text.
 
 ### Date Modifications
 - Added a tech preview section on [semantic skeletons](tr35-dates.md#Semantic_Skeletons), allowing for less data and faster performance in formatting dates.