diff --git a/src/model/data_catalogue.rs b/src/model/data_catalogue.rs
index 231be2e..ca5b270 100644
--- a/src/model/data_catalogue.rs
+++ b/src/model/data_catalogue.rs
@@ -29,7 +29,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::model::onkostar_editor::OnkostarEditor;
 use crate::model::requirements::{Requirement, Requires};
-use crate::model::{Comparable, Listable, Ordner, Sortable};
+use crate::model::{Comparable, FolderContent, Listable, Ordner, Sortable};
 
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
@@ -63,7 +63,11 @@ pub struct DataCatalogue {
 impl Listable for DataCatalogue {
     fn to_listed_string(&self) -> String {
         format!(
-            "Datenkatalog '{}' in Revision '{}'",
+            "Datenkatalog ({}) '{}' in Revision '{}'",
+            match self.is_system_library_content() {
+                true => style("S").yellow(),
+                _ => style("u"),
+            },
             style(&self.name).yellow(),
             style(&self.revision).yellow()
         )
@@ -116,9 +120,8 @@ impl Requires for DataCatalogue {
 
     fn to_requirement_string<'a>(&'a self, all: &'a OnkostarEditor) -> String {
         format!(
-            "Datenkatalog '{}' in Revision '{}'\n{}",
-            style(&self.name).yellow(),
-            style(&self.revision).yellow(),
+            "{}\n{}",
+            self.to_listed_string(),
             self.get_required_entries(all)
                 .iter()
                 .map(|entry| match entry {
@@ -135,6 +138,12 @@ impl Requires for DataCatalogue {
     }
 }
 
+impl FolderContent for DataCatalogue {
+    fn get_library_folder(&self) -> String {
+        self.ordner.bibliothek.name.to_string()
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
 pub struct Entries {
diff --git a/src/model/data_form.rs b/src/model/data_form.rs
index 27cab99..ffb7432 100644
--- a/src/model/data_form.rs
+++ b/src/model/data_form.rs
@@ -30,7 +30,7 @@ use serde::{Deserialize, Serialize};
 use crate::model::onkostar_editor::OnkostarEditor;
 use crate::model::requirements::{Requirement, Requires};
 use crate::model::{
-    apply_profile_to_form_entry, Ansichten, Comparable, Entries, Filter, FormEntry,
+    apply_profile_to_form_entry, Ansichten, Comparable, Entries, Filter, FolderContent, FormEntry,
     FormEntryContainer, Listable, MenuCategory, PlausibilityRules, Script, Sortable,
 };
 use crate::model::{Haeufigkeiten, Ordner};
@@ -185,7 +185,11 @@ impl FormEntryContainer for DataForm {
 impl Listable for DataForm {
     fn to_listed_string(&self) -> String {
         format!(
-            "Formular '{}' in Revision '{}'",
+            "Formular ({}) '{}' in Revision '{}'",
+            match self.is_system_library_content() {
+                true => style("S").yellow(),
+                _ => style("u"),
+            },
             style(&self.name).yellow(),
             style(&self.revision).yellow()
         )
@@ -246,9 +250,8 @@ impl Requires for DataForm {
 
     fn to_requirement_string<'a>(&'a self, all: &'a OnkostarEditor) -> String {
         format!(
-            "Formular '{}' in Revision '{}'\n{}",
-            style(&self.name).yellow(),
-            style(&self.revision).yellow(),
+            "{}\n{}",
+            self.to_listed_string(),
             self.get_required_entries(all)
                 .iter()
                 .map(|entry| match entry {
@@ -281,6 +284,12 @@ impl Requires for DataForm {
     }
 }
 
+impl FolderContent for DataForm {
+    fn get_library_folder(&self) -> String {
+        self.ordner.bibliothek.name.to_string()
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
 pub struct DataCatalogues {
diff --git a/src/model/mod.rs b/src/model/mod.rs
index 37865cf..18f8094 100644
--- a/src/model/mod.rs
+++ b/src/model/mod.rs
@@ -268,3 +268,11 @@ pub trait FormEntry {
     fn update_anzeige_auswahl(&mut self, value: String);
     fn update_scripts_code(&mut self, value: String);
 }
+
+pub trait FolderContent {
+    fn get_library_folder(&self) -> String;
+
+    fn is_system_library_content(&self) -> bool {
+        "ONKOSTAR Bibliothek" == self.get_library_folder()
+    }
+}
diff --git a/src/model/onkostar_editor.rs b/src/model/onkostar_editor.rs
index 8e2748c..68bee7c 100644
--- a/src/model/onkostar_editor.rs
+++ b/src/model/onkostar_editor.rs
@@ -97,7 +97,11 @@ impl OnkostarEditor {
     }
 
     fn print_items(title: &str, list: &[impl Listable]) {
-        println!("\n{} {}", list.len(), style(title).underlined());
+        print!("\n{} {}", list.len(), style(title).underlined());
+        println!(
+            " - Inhalte der Systembibliothek sind mit ({}) markiert",
+            style("S").yellow()
+        );
         list.iter()
             .for_each(|entry| println!("{}", entry.to_listed_string()));
     }
@@ -117,7 +121,11 @@ impl OnkostarEditor {
     }
 
     fn print_items_tree(&self, title: &str, list: &[impl Requires]) {
-        println!("\n{} {}", list.len(), style(title).underlined());
+        print!("\n{} {}", list.len(), style(title).underlined());
+        println!(
+            " - Inhalte der Systembibliothek sind mit ({}) markiert",
+            style("S").yellow()
+        );
         list.iter()
             .for_each(|entry| println!("{}", entry.to_requirement_string(self)));
     }
diff --git a/src/model/property_catalogue.rs b/src/model/property_catalogue.rs
index 3d59850..4d31b9e 100644
--- a/src/model/property_catalogue.rs
+++ b/src/model/property_catalogue.rs
@@ -25,7 +25,7 @@
 use console::style;
 use serde::{Deserialize, Serialize};
 
-use crate::model::{Comparable, Listable, Ordner, Sortable};
+use crate::model::{Comparable, FolderContent, Listable, Ordner, Sortable};
 
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
@@ -56,7 +56,11 @@ pub struct PropertyCatalogue {
 impl Listable for PropertyCatalogue {
     fn to_listed_string(&self) -> String {
         format!(
-            "Merkmalskatalog '{}' in Revision '{}'",
+            "Merkmalskatalog ({}) '{}' in Revision '{}'",
+            match self.is_system_library_content() {
+                true => style("S").yellow(),
+                _ => style("u"),
+            },
             style(&self.name).yellow(),
             style(&self.revision).yellow()
         )
@@ -89,6 +93,12 @@ impl Comparable for PropertyCatalogue {
     }
 }
 
+impl FolderContent for PropertyCatalogue {
+    fn get_library_folder(&self) -> String {
+        self.ordner.bibliothek.name.to_string()
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
 pub struct Versions {
diff --git a/src/model/unterformular.rs b/src/model/unterformular.rs
index be8c721..d08fa39 100644
--- a/src/model/unterformular.rs
+++ b/src/model/unterformular.rs
@@ -30,7 +30,7 @@ use serde::{Deserialize, Serialize};
 use crate::model::onkostar_editor::OnkostarEditor;
 use crate::model::requirements::{Requirement, Requires};
 use crate::model::{
-    apply_profile_to_form_entry, Ansichten, Comparable, Entries, Filter, FormEntry,
+    apply_profile_to_form_entry, Ansichten, Comparable, Entries, Filter, FolderContent, FormEntry,
     FormEntryContainer, Listable, MenuCategory, PlausibilityRules, Script, Sortable,
 };
 use crate::model::{Haeufigkeiten, Ordner};
@@ -197,14 +197,22 @@ impl Listable for Unterformular {
     fn to_listed_string(&self) -> String {
         if self.hat_unterformulare {
             return format!(
-                "Unterformular '{}' in Revision '{}' {}",
+                "Unterformular ({}) '{}' in Revision '{}' {}",
+                match self.is_system_library_content() {
+                    true => style("S").yellow(),
+                    _ => style("u"),
+                },
                 style(&self.name).yellow(),
                 style(&self.revision).yellow(),
                 style("Unterformular mit Markierung 'hat Unterformulare'!").red()
             );
         }
         format!(
-            "Unterformular '{}' in Revision '{}'",
+            "Unterformular ({}) '{}' in Revision '{}'",
+            match self.is_system_library_content() {
+                true => style("S").yellow(),
+                _ => style("u"),
+            },
             style(&self.name).yellow(),
             style(&self.revision).yellow()
         )
@@ -265,9 +273,8 @@ impl Requires for Unterformular {
 
     fn to_requirement_string<'a>(&'a self, all: &'a OnkostarEditor) -> String {
         format!(
-            "Unterformular '{}' in Revision '{}'\n{}",
-            style(&self.name).yellow(),
-            style(&self.revision).yellow(),
+            "{}\n{}",
+            self.to_listed_string(),
             self.get_required_entries(all)
                 .iter()
                 .map(|entry| match entry {
@@ -300,6 +307,12 @@ impl Requires for Unterformular {
     }
 }
 
+impl FolderContent for Unterformular {
+    fn get_library_folder(&self) -> String {
+        self.ordner.bibliothek.name.to_string()
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
 pub struct DataCatalogues {