diff --git a/spec.md b/spec.md
index 16e7273..ec0f573 100644
--- a/spec.md
+++ b/spec.md
@@ -68,7 +68,7 @@ progressively greater amount of knowledge."
 
 
 #### Table of Contents
-**Status:** Required.  
+**Status:** Required by default, optional for READMEs less than 100 lines.
 **Requirements:**
 - Must link to all Markdown sections in the file.
 - Must start with the next section; do not include the title or Table of Contents headings.
@@ -90,7 +90,7 @@ progressively greater amount of knowledge."
 - Cover intellecutal provenance: A `See Also` section is also fitting.
 
 #### Install
-**Status:** Required.  
+**Status:** Required by default, optional for doc modules.
 **Requirements:**
 - Code block illustrating how to install.
 
@@ -105,7 +105,7 @@ Subsections:
 - If there is no code in the module - for instance, a document-based module - this section is not required.
 
 #### Usage
-**Status:** Required.  
+**Status:** Required by default, optional for doc modules.
 **Requirements:**
 - Code block illustrating common usage.
 - If CLI compatible, code block indicating common usage.