[css-page-floats] variably sized float references and basic deferring beyond the last fragmentation container

Author: johanneswilm

css-page-floats/Overview.bs

@@ -5,7 +5,7 @@ Shortname: css-page-floats
 Level: 3
 Group: csswg
 Status: ED
-Work Status: Exploring
+!Work Status: Exploring
 ED: http://dev.w3.org/csswg/css-page-floats/
 Previous Version: https://hg.csswg.org/drafts/raw-file/108d7e3ff204/css-page-floats/Overview.html
 Editor: Johannes Wilm, Vivliostyle, johanneswilm@vivliostyle.com
@@ -829,6 +829,33 @@ img {
 
   </div>
 
+
+  <h2 id="fixed_height_float_references">
+  Size determination of float references and automatic deferring of page floats
+  </h2>
+
+  Float references are grown up to the their `max-height` and `max-width` or their
+  `available size`, whichever is the lowest, as they are filled up until it cannot
+  contain the following page float. All subsequent page floats are automatically
+  deferred to the next `fragmentation container`.
+
+  <h2 id="fixed_height_float_references_last_container">
+  Automatic deferring of page floats beyond the last `fragmentation container`
+  </h2>
+
+  If the process of automatic deferring leads to floats being deferred from the
+  last available `fragmentation container`, and the `fragmentation context` allows
+  for the addition of another `fragmentation container`, a new `fragmentation
+  container` is added to the end of the `fragmentation context`.
+
+  If the process of automatic deferring leads to floats being deferred from the
+  last available `fragmentation container`, the `fragmentation context` does
+  not allow for the addition of another `fragmentation container`, and the
+  `fragmentation container` is a `region`, then the `regionOverset` attribute of
+  the `fragmentation container` is set to `overset` and a `regionoversetchange`
+  event for the corresponding `NamedFlow`.
+
+
 <h2 id="relation_to_absolutely_positioned_exclusions">
 Floats and absolutely positioned exclusions</h2>
 
@@ -941,29 +968,6 @@ canvas {
 
   </div>
 
-<h3 id="fixed_height_float_references">
-Page floats with float references with fixed heights
-</h3>
-
-If page floats are inside a float reference with a fixed height, the float
-reference is filled up until it cannot contain the following page float. All
-subsequent page floats are deferred to the next column/region/page.
-
-<h3 id="variable_height_nomaximum_float_references">
-Page floats with variable height float references with no maximum height
-</h3>
-Variable height float references are grown to accommodate all its containing page
-floats. Page floats inside of variable height float references without a maximum
-height are therefore never deferred automatically.
-
-<h3 id="variable_heihgt_maximum_height_float_references">
-Page floats with variable height float references with a set maximum height
-</h3>
-Float references with a variable height with a set max height are grown to
-accommodate all of its containing page floats up to their maximum height. Subsequent
-page floats are deferred to the following column/region/page.
-
-
 <h2 id="overconstrained-page-floats">Overconstrained floats</h2>
 
   In many cases, the specified values on these properties cannot be honored.
@@ -1065,6 +1069,9 @@ p { float-reference: page; float: top; float-defer: last }
   :
 
   <ol>
+    <li>
+      Added info on variably sized float references and deferring beyond the last
+      fragmentation container.  
     <li>
       Specified that block-start and block-end floats have an initial inline size
       of 100% and are placed at the inline-start.