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[Bug 18930] New: Do all rendered elements generate a principal box?

From: <bugzilla@jessica.w3.org>
Date: Thu, 20 Sep 2012 08:17:36 +0000
To: public-css-bugzilla@w3.org
Message-ID: <bug-18930-5148@http.www.w3.org/Bugs/Public/>

           Summary: Do all rendered elements generate a principal box?
           Product: CSS
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: CSS Level 2
        AssignedTo: bert@w3.org
        ReportedBy: antonsforums@yahoo.co.uk
         QAContact: public-css-bugzilla@w3.org

Reported by Anton Prowse

The WG resolved to accept a proposal for Bug 18346 that contains the following

  # Certain values of the 'display' property cause an element of
  # the source document to generate a *principal box* that contains
  # descendant boxes and generated content and is also the box involved
  # in any positioning scheme.

but a desire was expressed to be more specific about which values of 'display'
result in a principal box.

Firstly, do inline elements generate a principal box (which may well be
fragmented across multiple line boxes)?  Is that consistent with the inline
formatting model defined in CSS21, and if not, is it possible to change that
model without breaking implementations?

Secondly, will other values of 'display' defined in future specifications
necessarily result in a principal box? (It is not strictly necessary to address
this for CSS21 errata, but it may provide useful input.)

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Received on Thursday, 20 September 2012 08:17:37 UTC

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