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diff --git a/docs/about/naming_rest_api_cheat_sheet.odg b/docs/about/naming_rest_api_cheat_sheet.odg
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diff --git a/docs/about/naming_rest_api_migration.odt b/docs/about/naming_rest_api_migration.odt
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diff --git a/docs/about/naming_rest_api_migration.pdf b/docs/about/naming_rest_api_migration.pdf
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diff --git a/docs/developer/useful/useful.odg b/docs/developer/useful/useful.odg
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diff --git a/src/main/java/org/openepics/names/rest/api/v1/INames.java b/src/main/java/org/openepics/names/rest/api/v1/INames.java
index a4f0afad44baff4ef1abebe97cb61dea3b837073..f353cb126b99a492d079b5d027235896997bdc1e 100644
--- a/src/main/java/org/openepics/names/rest/api/v1/INames.java
+++ b/src/main/java/org/openepics/names/rest/api/v1/INames.java
@@ -584,6 +584,7 @@ public interface INames {
 
     /**
      * Find history for name by uuid (exact match).
+     * History consists of line of uuid.
      * Return paged list of name elements.
      *
      * @param uuid uuid
@@ -597,6 +598,7 @@ public interface INames {
             summary     = "Find history for name by uuid (exact match)",
             description = """
                           Find history for name by uuid (exact match).
+                          History consists of line of uuid.
                           Return paged array of name elements.
                           """
     )
diff --git a/src/main/java/org/openepics/names/rest/api/v1/IStructures.java b/src/main/java/org/openepics/names/rest/api/v1/IStructures.java
index c2bb834aae8777863d6dc879124539719602a1b9..40773951a1a22c391c6a6232bf31e0530f5644b7 100644
--- a/src/main/java/org/openepics/names/rest/api/v1/IStructures.java
+++ b/src/main/java/org/openepics/names/rest/api/v1/IStructures.java
@@ -620,6 +620,7 @@ public interface IStructures {
 
     /**
      * Find history for structure by uuid (exact match).
+     * History consists of line of uuid.
      * Return paged list of structure elements.
      *
      * @param uuid uuid
@@ -634,6 +635,7 @@ public interface IStructures {
             summary     = "Find history for structure by uuid (exact match)",
             description = """
                           Find history for structure by uuid (exact match).
+                          History consists of line of uuid.
                           Return paged array of structure elements.
                           """
     )
diff --git a/src/main/resources/static/images/naming_backend_lifecycle.png b/src/main/resources/static/images/naming_backend_lifecycle.png
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diff --git a/src/main/resources/static/pdfs/naming_rest_api_cheat_sheet.pdf b/src/main/resources/static/pdfs/naming_rest_api_cheat_sheet.pdf
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diff --git a/src/main/resources/static/pdfs/naming_rest_api_migration.pdf b/src/main/resources/static/pdfs/naming_rest_api_migration.pdf
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