spec:css-pseudo-4; type:selector; text:::before

spec:css-pseudo-4; type:selector; text:::first-letter

spec:css-pseudo-4; type:selector; text:::first-line

spec:dom; type:dfn; for:/; text:element

spec:dom; type:dfn; for:/;

text:document

text:element

spec:infra; type:dfn; text:list

spec:html; type:dfn; for:global object; text:realm

spec:css22; type:property;

});

</pre>

</div>

</div>

The algorithm below is run when the {{registerLayout(name, layoutCtor)}} is called. It notifies the

user agent layout engine about the new user defined layout.

16. Let |intrinsicSizesValue| be the result of [=Get=](|prototype|, "intrinsicSizes").

17. Let |intrinsicSizes| be the result of [=converted to an IDL value|converting=]

|intrinsicSizesValue| to the {{Function}} [=callback function=] type. Rethrow any

|intrinsicSizesValue| to the {{Function}} [=callback function=] type. Rethrow any

exceptions from the conversion.

18. Let |layoutValue| be the result of [=Get=](|prototype|, <code>"layout"</code>).

Note: This is to ensure that only {{LayoutChild}}ren passed in as arguments to either the

layout or intrinsicSizes method are used.

4. If |breakToken|'s {{ChildBreakToken/[[unique id]]} is not equal to |context|'s [=unique id=],

4. If |breakToken|'s {{ChildBreakToken/[[unique id]]}} is not equal to |context|'s [=unique id=],

reject |p| with a "{{InvalidStateError}}" {{DOMException}}, and abort all these steps.

5. If |context|'s [=layout API context/mode=] is <code>"intrinsic-sizes"</code>, reject |p| with