Editorial: Make grammar recursion more clear (#593)

Author: leebyron

spec/Appendix A -- Notation Conventions.md

@@ -40,8 +40,8 @@ A definition may refer to itself, which describes repetitive sequences,
 for example:
 
 ListOfLetterA :
-  - `a`
   - ListOfLetterA `a`
+  - `a`
 
 
 ## Lexical and Syntactical Grammar
@@ -108,11 +108,11 @@ Sentence : Noun Verb Adverb?
 is shorthand for
 
 Sentence :
-  - Noun Verb
   - Noun Verb Adverb
+  - Noun Verb
 
-A subscript suffix "{Symbol+}" is shorthand for a list of
-one or more of that symbol.
+A subscript suffix "{Symbol+}" is shorthand for a list of one or more of that
+symbol, represented as an additional recursive production.
 
 As an example:
 
@@ -123,8 +123,8 @@ is shorthand for
 Book : Cover Page_list Cover
 
 Page_list :
-  - Page
   - Page_list Page
+  - Page
 
 
 **Parameterized Grammar Productions**

spec/Appendix B -- Grammar Summary.md

@@ -233,8 +233,8 @@ ObjectTypeExtension :
   - extend type Name ImplementsInterfaces
 
 ImplementsInterfaces :
-  - implements `&`? NamedType
   - ImplementsInterfaces & NamedType
+  - implements `&`? NamedType
 
 FieldsDefinition : { FieldDefinition+ }
 
@@ -253,8 +253,8 @@ InterfaceTypeExtension :
 UnionTypeDefinition : Description? union Name Directives[Const]? UnionMemberTypes?
 
 UnionMemberTypes :
-  - = `|`? NamedType
   - UnionMemberTypes | NamedType
+  - = `|`? NamedType
 
 UnionTypeExtension :
   - extend union Name Directives[Const]? UnionMemberTypes
@@ -281,8 +281,8 @@ InputObjectTypeExtension :
 DirectiveDefinition : Description? directive @ Name ArgumentsDefinition? on DirectiveLocations
 
 DirectiveLocations :
-  - `|`? DirectiveLocation
   - DirectiveLocations | DirectiveLocation
+  - `|`? DirectiveLocation
 
 DirectiveLocation :
   - ExecutableDirectiveLocation

spec/Section 3 -- Type System.md

@@ -553,8 +553,8 @@ Scalar type extensions have the potential to be invalid if incorrectly defined.
 ObjectTypeDefinition : Description? type Name ImplementsInterfaces? Directives[Const]? FieldsDefinition?
 
 ImplementsInterfaces :
-  - implements `&`? NamedType
   - ImplementsInterfaces & NamedType
+  - implements `&`? NamedType
 
 FieldsDefinition : { FieldDefinition+ }
 
@@ -1125,8 +1125,8 @@ Interface type extensions have the potential to be invalid if incorrectly define
 UnionTypeDefinition : Description? union Name Directives[Const]? UnionMemberTypes?
 
 UnionMemberTypes :
-  - = `|`? NamedType
   - UnionMemberTypes | NamedType
+  - = `|`? NamedType
 
 GraphQL Unions represent an object that could be one of a list of GraphQL
 Object types, but provides for no guaranteed fields between those types.
@@ -1610,8 +1610,8 @@ Expected Type | Internal Value   | Coerced Result
 DirectiveDefinition : Description? directive @ Name ArgumentsDefinition? on DirectiveLocations
 
 DirectiveLocations :
-  - `|`? DirectiveLocation
   - DirectiveLocations | DirectiveLocation
+  - `|`? DirectiveLocation
 
 DirectiveLocation :
   - ExecutableDirectiveLocation