diff --git a/css-typed-om/Overview.bs b/css-typed-om/Overview.bs
index 8528aa2d..8e0efc7c 100644
--- a/css-typed-om/Overview.bs
+++ b/css-typed-om/Overview.bs
@@ -1416,28 +1416,40 @@ appear as computed values (i.e. as a value stored on computed
Computed {{CSSUnparsedValue}} objects {#computed-unparsedvalue-objects}
-----------------------------------------------------------------------------
-Custom property references are resolved as part of style computation. Accordingly,
-computed {{CSSUnparsedValue}} objects will not contain {{CSSVariableReferenceValue}} objects.
-As a result, only a single {{DOMString}} will appear in the sequence contained by
-computed {{CSSUnparsedValue}} objects.
-
-Furthermore, values that at specified value time contained custom property references
-are renormalized after computation.
+A property with a specified {{CSSUnparsedValue}} value will not
+compute to a {{CSSUnparsedValue}}. Instead, after custom property references
+are resolved, the {{CSSStyleValue}} subclass appropriate to the property will be
+used.
+For example, a style rule containing:
-Consider an element "e" with an inline style that specifies a width of
var(--baz).
+
+width: calc(var(--foo) + 10%);
+
-Assuming that the custom property --baz contains the value "42px", running the following code:
+Will represent a specified width as an {{CSSUnparsedValue}}, but if this value
+is the winning value during computation for a given element then that element's
+computed width will be represented by a {{CSSLengthValue}} object (assuming
+that --foo resolves to a valid substitution).
+
-var a = e.styleMap.get('width');
-var b = getComputedStyleMap(e).get('width');
-
+Often there will be no {{CSSStyleValue}} subclass appropriate - for example when a custom property
+contains a reference to another custom property. In these cases, a {{CSSStyleValue}}
+is used directly to represent a valud of unknown type.
-Will result in "a" containing a {{CSSUnparsedValue}} with a single {{CSSVariableReferenceValue}}
-in its sequence, and "b" containing a {{CSSSimpleLength}} representing 42px.
+
+
+For example, a style rule containing:
+
+
+--foo: var(--bar) black;
+
+Will represent a specified value for --foo as a {{CSSUnparsedValue}}, and if
+this value is the winning declaration for --foo during computation for a given
+element, then that element's will have a computed value for --foo that is
+represented by a {{CSSStyleValue}}.