diff --git a/src/iter/ast_node.rs b/src/iter/ast_node.rs
index 8b137891..da38bc2e 100644
--- a/src/iter/ast_node.rs
+++ b/src/iter/ast_node.rs
@@ -1 +1,110 @@
+use crate::types::AngleLink;
+use crate::types::BabelCall;
+use crate::types::Bold;
+use crate::types::Citation;
+use crate::types::CitationReference;
+use crate::types::Clock;
+use crate::types::Code;
+use crate::types::Comment;
+use crate::types::CommentBlock;
+use crate::types::DiarySexp;
+use crate::types::Document;
+use crate::types::Drawer;
+use crate::types::DynamicBlock;
+use crate::types::Entity;
+use crate::types::ExampleBlock;
+use crate::types::ExportBlock;
+use crate::types::ExportSnippet;
+use crate::types::FixedWidthArea;
+use crate::types::FootnoteDefinition;
+use crate::types::FootnoteReference;
+use crate::types::GreaterBlock;
+use crate::types::Heading;
+use crate::types::HorizontalRule;
+use crate::types::InlineBabelCall;
+use crate::types::InlineSourceBlock;
+use crate::types::Italic;
+use crate::types::Keyword;
+use crate::types::LatexEnvironment;
+use crate::types::LatexFragment;
+use crate::types::LineBreak;
+use crate::types::OrgMacro;
+use crate::types::Paragraph;
+use crate::types::PlainLink;
+use crate::types::PlainList;
+use crate::types::PlainText;
+use crate::types::Planning;
+use crate::types::PropertyDrawer;
+use crate::types::RadioLink;
+use crate::types::RadioTarget;
+use crate::types::RegularLink;
+use crate::types::Section;
+use crate::types::SrcBlock;
+use crate::types::StatisticsCookie;
+use crate::types::StrikeThrough;
+use crate::types::Subscript;
+use crate::types::Superscript;
+use crate::types::Table;
+use crate::types::Target;
+use crate::types::Timestamp;
+use crate::types::Underline;
+use crate::types::Verbatim;
+use crate::types::VerseBlock;
 
+pub enum AstNode<'r, 's> {
+    // Document Nodes
+    Document(&'r Document<'s>),
+    Heading(&'r Heading<'s>),
+    Section(&'r Section<'s>),
+    // Elements
+    Paragraph(&'r Paragraph<'s>),
+    PlainList(&'r PlainList<'s>),
+    GreaterBlock(&'r GreaterBlock<'s>),
+    DynamicBlock(&'r DynamicBlock<'s>),
+    FootnoteDefinition(&'r FootnoteDefinition<'s>),
+    Comment(&'r Comment<'s>),
+    Drawer(&'r Drawer<'s>),
+    PropertyDrawer(&'r PropertyDrawer<'s>),
+    Table(&'r Table<'s>),
+    VerseBlock(&'r VerseBlock<'s>),
+    CommentBlock(&'r CommentBlock<'s>),
+    ExampleBlock(&'r ExampleBlock<'s>),
+    ExportBlock(&'r ExportBlock<'s>),
+    SrcBlock(&'r SrcBlock<'s>),
+    Clock(&'r Clock<'s>),
+    DiarySexp(&'r DiarySexp<'s>),
+    Planning(&'r Planning<'s>),
+    FixedWidthArea(&'r FixedWidthArea<'s>),
+    HorizontalRule(&'r HorizontalRule<'s>),
+    Keyword(&'r Keyword<'s>),
+    BabelCall(&'r BabelCall<'s>),
+    LatexEnvironment(&'r LatexEnvironment<'s>),
+    // Objects
+    Bold(&'r Bold<'s>),
+    Italic(&'r Italic<'s>),
+    Underline(&'r Underline<'s>),
+    StrikeThrough(&'r StrikeThrough<'s>),
+    Code(&'r Code<'s>),
+    Verbatim(&'r Verbatim<'s>),
+    PlainText(&'r PlainText<'s>),
+    RegularLink(&'r RegularLink<'s>),
+    RadioLink(&'r RadioLink<'s>),
+    RadioTarget(&'r RadioTarget<'s>),
+    PlainLink(&'r PlainLink<'s>),
+    AngleLink(&'r AngleLink<'s>),
+    OrgMacro(&'r OrgMacro<'s>),
+    Entity(&'r Entity<'s>),
+    LatexFragment(&'r LatexFragment<'s>),
+    ExportSnippet(&'r ExportSnippet<'s>),
+    FootnoteReference(&'r FootnoteReference<'s>),
+    Citation(&'r Citation<'s>),
+    CitationReference(&'r CitationReference<'s>),
+    InlineBabelCall(&'r InlineBabelCall<'s>),
+    InlineSourceBlock(&'r InlineSourceBlock<'s>),
+    LineBreak(&'r LineBreak<'s>),
+    Target(&'r Target<'s>),
+    StatisticsCookie(&'r StatisticsCookie<'s>),
+    Subscript(&'r Subscript<'s>),
+    Superscript(&'r Superscript<'s>),
+    Timestamp(&'r Timestamp<'s>),
+}
diff --git a/src/iter/ast_node_iter.rs b/src/iter/ast_node_iter.rs
index 136814a3..dcd79bc5 100644
--- a/src/iter/ast_node_iter.rs
+++ b/src/iter/ast_node_iter.rs
@@ -1,5 +1,63 @@
 use crate::types::Object;
 
+pub enum AstNodeIter<'s> {
+    // Document Nodes
+    // Document(DocumentIter<'s>),
+    // Heading(HeadingIter<'s>),
+    // Section(SectionIter<'s>),
+    // Elements
+    // Paragraph(ParagraphIter<'s>),
+    // PlainList(PlainListIter<'s>),
+    // GreaterBlock(GreaterBlockIter<'s>),
+    // DynamicBlock(DynamicBlockIter<'s>),
+    // FootnoteDefinition(FootnoteDefinitionIter<'s>),
+    // Comment(CommentIter<'s>),
+    // Drawer(DrawerIter<'s>),
+    // PropertyDrawer(PropertyDrawerIter<'s>),
+    // Table(TableIter<'s>),
+    // VerseBlock(VerseBlockIter<'s>),
+    // CommentBlock(CommentBlockIter<'s>),
+    // ExampleBlock(ExampleBlockIter<'s>),
+    // ExportBlock(ExportBlockIter<'s>),
+    // SrcBlock(SrcBlockIter<'s>),
+    // Clock(ClockIter<'s>),
+    // DiarySexp(DiarySexpIter<'s>),
+    // Planning(PlanningIter<'s>),
+    // FixedWidthArea(FixedWidthAreaIter<'s>),
+    // HorizontalRule(HorizontalRuleIter<'s>),
+    // Keyword(KeywordIter<'s>),
+    // BabelCall(BabelCallIter<'s>),
+    // LatexEnvironment(LatexEnvironmentIter<'s>),
+    // Objects
+    Bold(BoldIter<'s>),
+    // Italic(ItalicIter<'s>),
+    // Underline(UnderlineIter<'s>),
+    // StrikeThrough(StrikeThroughIter<'s>),
+    // Code(CodeIter<'s>),
+    // Verbatim(VerbatimIter<'s>),
+    // PlainText(PlainTextIter<'s>),
+    // RegularLink(RegularLinkIter<'s>),
+    // RadioLink(RadioLinkIter<'s>),
+    // RadioTarget(RadioTargetIter<'s>),
+    // PlainLink(PlainLinkIter<'s>),
+    // AngleLink(AngleLinkIter<'s>),
+    // OrgMacro(OrgMacroIter<'s>),
+    // Entity(EntityIter<'s>),
+    // LatexFragment(LatexFragmentIter<'s>),
+    // ExportSnippet(ExportSnippetIter<'s>),
+    // FootnoteReference(FootnoteReferenceIter<'s>),
+    // Citation(CitationIter<'s>),
+    // CitationReference(CitationReferenceIter<'s>),
+    // InlineBabelCall(InlineBabelCallIter<'s>),
+    // InlineSourceBlock(InlineSourceBlockIter<'s>),
+    // LineBreak(LineBreakIter<'s>),
+    // Target(TargetIter<'s>),
+    // StatisticsCookie(StatisticsCookieIter<'s>),
+    // Subscript(SubscriptIter<'s>),
+    // Superscript(SuperscriptIter<'s>),
+    // Timestamp(TimestampIter<'s>),
+}
+
 pub struct BoldIter<'s> {
     next: std::slice::Iter<'s, Object<'s>>,
 }