improve and clarify paragraph content

spec/modules/ROOT/pages/paragraph.adoc

@@ -3,9 +3,9 @@
 == Description
 
 Paragraphs are a foundational structure in AsciiDoc.
-A *paragraph* is a simple, implicit block consisting of a run of contiguous non-interrupting lines that can contain inline elements and uninterpreted text.
+A *paragraph* is a simple, implicit block consisting of a run of contiguous, non-interrupting lines that consist of inline elements, preprocessor directives, and uninterpreted text.
 If a line isn't recognized as another block element or structural form, it's assumed to be a paragraph.
-Unrecognized syntax or syntax not allowed inside a paragraph is treated as text and isn't dropped.
+Unrecognized syntax, or syntax not allowed inside a paragraph, is treated as uninterpreted text and isn't dropped.
 
 === Source examples
 
@@ -42,7 +42,7 @@ A paragraph must accept:
 ////
 
 A paragraph must not be empty.
-It may parse to empty in the case it contains an inline preprocessor directive that resolves to empty.
+It can parse to empty if it contains an inline preprocessor directive that resolves to empty.
 
 A paragraph must be interrupted by:
 
@@ -55,7 +55,7 @@ A paragraph must be interrupted by:
 
 === Attributes and metadata
 
-A paragraph must accept the following attributes and metadata:
+A paragraph can accept the following attributes and metadata:
 
 * Block title (title line and named attribute)
 * id (named and shorthand forms)