diff --git a/docs/cost/ids/core.md b/docs/cost/ids/core.md
index f9cb0b20..3e890ec5 100644
--- a/docs/cost/ids/core.md
+++ b/docs/cost/ids/core.md
@@ -6,9 +6,9 @@
 }
 </style>
 
-This page documents a mapping from the 'core' CoST IDS elements to OC4IDS fields and codes. The organization of the mapping tables reflects the structure of the CoST IDS.
+This page documents a mapping from the "core" CoST IDS elements to OC4IDS fields and codes. The organization of the mapping tables reflects the structure of the CoST IDS.
 
-The CoST IDS sets out a number of disclosure requirements under the heading of 'information for disclosure upon request', also known as 'reactive disclosure'. You can disclose these elements proactively using OC4IDS. Separate tables are provided for project-level and process-level reactive disclosures.
+The CoST IDS sets out a number of disclosure requirements under the heading of "information for disclosure upon request," also known as "reactive disclosure." You can disclose these elements proactively using OC4IDS. Separate tables are provided for project-level and process-level reactive disclosures.
 
 ## Project level
 
diff --git a/docs/cost/ids/index.md b/docs/cost/ids/index.md
index c01bfef1..38d67264 100644
--- a/docs/cost/ids/index.md
+++ b/docs/cost/ids/index.md
@@ -1,9 +1,9 @@
 # CoST IDS to OC4IDS mapping
 
-This section contains a mapping from the CoST IDS to OC4IDS:
+This section contains mappings from the CoST IDS to OC4IDS:
 
-* The [core standard mapping](core) describes a mapping of the proactive and reactive disclosure elements of the 'core' CoST IDS .
-* The [sustainability modules mapping](sustainability ) describes a mapping of the optional CoST IDS sustainability modules.
+* The [core standard mapping](core) describes a mapping of the proactive and reactive disclosure elements of the "core" CoST IDS.
+* The [sustainability modules mapping](sustainability) describes a mapping of the optional CoST IDS sustainability modules.
 
 ```{toctree}
 :maxdepth: 1
diff --git a/docs/cost/ocds.md b/docs/cost/ocds.md
index e1139f88..eb681903 100644
--- a/docs/cost/ocds.md
+++ b/docs/cost/ocds.md
@@ -91,7 +91,7 @@ Implementations which include multiple currencies ought to give consideration to
 :file: ../../build/current_lang/reactive-project-level-identification-preparation.csv
 ```
 
-###### Completion
+##### Completion
 
 ```{csv-table-no-translate}
 :header-rows: 1