diff --git a/spec/design.md b/spec/design.md
index 27f076c..5259bd6 100644
--- a/spec/design.md
+++ b/spec/design.md
@@ -157,10 +157,10 @@ A[A:I am writing, Help Terminology!];B{B:Terms understood?}
     A --> |1: Identify concepts| B
 ```
 
-#### why writing your objectives and ideas down [#why-objectives]
+#### why writing your objectives and ideas down {#why-objectives}
 You want to be understood and seek support for your plans or ideas. To guide this process, it's good to have a reference.
 
-#### what is "identifying a concept"? [#what-identifying]
+#### what is "identifying a concept"? {#what-identifying}
 An identifier points to something, in this case to a concept. Identification is the process of clearly describing what the concept is and defining the term that points to it.
 
 ### 2. Write the concept in a specific way: formulate criteria when you expect confusion to arise
@@ -171,7 +171,7 @@ B{B:Terms understood?}; D{D:Text with criteria understood?};
     B --> |2: No, I'll write criteria| D
 ```
 
-#### why criteria? [#why-criteria]
+#### why criteria? {#why-criteria}
 Another person should be able to apply wording to a certain concept and then be able to independently decide whether something falls in or out of the criterium. Example: if a stool is defined with the criterium "all furniture to comfortably sit on with exactly 3 legs from seat to each non-fixed contact point of the leg on the floor", then anyone could (dis)qualify various instances of something to sit on that looks like a stool to many.
 Although you might not fully agree that a 4-legged stool is no stool according to this definition with this criterium, the fact is that it's the generally applicable criterium that we were looking for.
 
@@ -191,11 +191,11 @@ Example: moving stools
 
 If a group of people had to move every stool, but only stools, from a furniture warehouse into a large lorry without clear criteria what a stool is and isn't, you will end up leaving stools behind and for sure bringing back half a lorry of furniture upon unloading.
 
-#### how to formulate criteria [#how-criteria]
+#### how to formulate criteria {#how-criteria}
 
 In text. And you could add examples to a criterium of edge cases / corner cases: what falls just in the criterium and what is just outside?
 
-#### what are good criteria? [#what-good-criteria]
+#### what are good criteria? {#what-good-criteria}
 
 Criteria that are determistic and clearly distinguish something.
 
@@ -207,12 +207,12 @@ D{D:Text with criteria understood?}
     D --> |3: No, I'll adjust criteria| D
 ```
 
-#### why replace terms by criteria? [#why-replace]
+#### why replace terms by criteria? {#why-replace}
 
 Criteria can be independently applied, terms have a aledged meaning and interpretation might of terms might point to distinctive concepts.
 Example: *move the stools into the van* might be interpreted as "break out the fixed stools in the cantina and bring the remnants to the van".
 
-#### how to replace terms by criteria? [#how-replace]
+#### how to replace terms by criteria? {#how-replace}
 
 Simply replace the term by the sentences criteria might consist of.
 
@@ -228,11 +228,11 @@ E[E:Term definition incl. criteria]; F[/F:Text with terms/]
     E --> |4: Replace criteria by term | F
 ```
 
-#### why put back terms [#why-back-terms]
+#### why put back terms {#why-back-terms}
 
 Once you've succesfully identified a concept for all stakeholders, it makes no sense to maintain repetitions of lengthy criteria descriptions in a text. Maitenance of the criteria is also easier with a single point of defnition. 
 
-#### how to put back terms [#how-back-terms]
+#### how to put back terms {#how-back-terms}
 
 Be sure to create a Terminology definition with the criteria and identify this concept with the term intended.