Clarify the reason why compound strings are needed

kitten · web-flow · commit 8204545e31a1 · 2017-11-06T00:38:48.000Z
diff --git a/readme.md b/readme.md
@@ -380,7 +380,7 @@ body, .foo {
 `[STRING_START, <quote>], [VALUE|VALUE_REF, <argument>], [STRING_END]`
 
 When a string in CSS contains an interpolation, e.g. `"hello, ${name}"`, the string should be split up into its values and
-value refs.
+value references. This is because compound values are unsuitable to represent strings, since all values and value references should be joined without a separating whitespace. Also how the references should be escaped changes for strings, due to their quotes.
 
 ```js
 [

Original file line number	Diff line number	Diff line change
`@@ -380,7 +380,7 @@ body, .foo {`
`380`	`380`	`[STRING_START, <quote>], [VALUE\|VALUE_REF, <argument>], [STRING_END]`
`381`	`381`
`382`	`382`	When a string in CSS contains an interpolation, e.g. `"hello, ${name}"`, the string should be split up into its values and
`383`		`-value refs.`
	`383`	`+value references. This is because compound values are unsuitable to represent strings, since all values and value references should be joined without a separating whitespace. Also how the references should be escaped changes for strings, due to their quotes.`
`384`	`384`
`385`	`385`	```js
`386`	`386`	`[`