[xliff] Unfinished business from xliff-comments

I have copied text from  xliff-comments:

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1. xliff-1-1.xsd has invalid attributes minOccurs,maxOccurs in <xs:choice>

The xliff-1-1.xsd XML schema assigns minOccurs and maxOccurs to the <choice>
element, but they are not allowed in that context.

XPath: xliff-1-1.xsd#/schema[1]/group[position() = 1 and @name =
'ElemGroup_TextContent']/choice[1]

Snippet:
	<!-- Groups -->
	<xsd:group name="ElemGroup_TextContent">
		<xsd:choice minOccurs="0" maxOccurs="unbounded">

Those attributes need to be specified everywhere that ElemGroup_TextContent
is referenced.

Example:	<xsd:group ref="xlf:ElemGroup_TextContent" minOccurs="0"
maxOccurs="unbounded"/>


Reference:
O'Reilly's "XML Schema", "xs:choice (within a group)", p. 250

Error seen with Microsoft's XSD 4.0 parser, but not XML Spy 4.4.
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2. placeholder id should not be required

XLIFF id attributes for placeholders should not be required.

For example, when a placeholder represents a line break, there is no need
for an id.

<x ctype="lb" />
-or-
<ph ctype="lb">\n</ph>

The ctype attribute provides all the information needed.

I think the 'id' should be optional for placeholders.
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cheers,
john