diff --git a/doc/use-case-diagramm.png b/doc/use-case-diagramm.png
index 4987196..19b158a 100644
Binary files a/doc/use-case-diagramm.png and b/doc/use-case-diagramm.png differ
diff --git a/doc/use-case-diagramm.uxf b/doc/use-case-diagramm.uxf
new file mode 100644
index 0000000..72c710e
--- /dev/null
+++ b/doc/use-case-diagramm.uxf
@@ -0,0 +1,13 @@
+<diagram program="umletino" version="15.0.0"><zoom_level>10</zoom_level><element><id>UMLClass</id><coordinates><x>500</x><y>0</y><w>390</w><h>810</h></coordinates><panel_attributes>Applikation
+--</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLActor</id><coordinates><x>160</x><y>280</y><w>100</w><h>110</h></coordinates><panel_attributes>Hobby-Gärtner</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLActor</id><coordinates><x>160</x><y>400</y><w>100</w><h>110</h></coordinates><panel_attributes>Markt-Gärtner</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLActor</id><coordinates><x>330</x><y>340</y><w>60</w><h>110</h></coordinates><panel_attributes>Gärtner</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>230</x><y>320</y><w>120</w><h>70</h></coordinates><panel_attributes>lt=&lt;&lt;.</panel_attributes><additional_attributes>100;50;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>230</x><y>370</y><w>120</w><h>90</h></coordinates><panel_attributes>lt=&lt;&lt;.</panel_attributes><additional_attributes>100;10;10;70</additional_attributes></element><element><id>UMLClass</id><coordinates><x>940</x><y>330</y><w>190</w><h>90</h></coordinates><panel_attributes>"Actor"
+Wetterdienst</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>570</x><y>40</y><w>200</w><h>70</h></coordinates><panel_attributes>Erhalte Anpflanzungen anhand
+von Saison und Klimazone </panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>570</x><y>120</y><w>200</w><h>60</h></coordinates><panel_attributes>Frage Anforderungen &amp; 
+Informationen einer Pflanze ab</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>520</x><y>520</y><w>160</w><h>60</h></coordinates><panel_attributes>Erstelle Aufgabenliste
+für konkrete Pflanze</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>570</x><y>200</y><w>200</w><h>50</h></coordinates><panel_attributes>Verwalte Gartenstandorte</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>600</x><y>730</y><w>200</w><h>60</h></coordinates><panel_attributes>Verwalte Massnahmen zur 
+Schädlingsbekämpfung
+</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>760</x><y>360</y><w>200</w><h>40</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;18;180;10</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>60</y><w>210</w><h>340</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;320;190;10</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>130</y><w>210</w><h>270</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>190;15;10;250</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>370</y><w>160</w><h>200</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>140;172;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>280</y><w>210</w><h>120</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>190;15;10;100</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>370</y><w>240</w><h>410</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>220;388;110;310;10;10</additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>550</x><y>420</y><w>250</w><h>50</h></coordinates><panel_attributes>Verwalte Aufgabenliste</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>370</y><w>190</w><h>90</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;12;170;70</additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>570</x><y>350</y><w>200</w><h>50</h></coordinates><panel_attributes>Frage Wetterprognose für 
+Standort ab</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>690</x><y>560</y><w>190</w><h>60</h></coordinates><panel_attributes>Verwalte Aufgaben auf Grund
+von Wetterbedingungen</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>590</x><y>640</y><w>210</w><h>60</h></coordinates><panel_attributes>Frage Massnahmen zur
+Schädlingsbekämpfung ab</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>360</y><w>210</w><h>40</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>190;15;10;20</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>370</y><w>230</w><h>320</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>210;295;110;250;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>870</x><y>360</y><w>90</w><h>250</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;228;70;10</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>370</y><w>340</w><h>250</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;12;120;200;320;230</additional_attributes></element><element><id>Relation</id><coordinates><x>630</x><y>460</y><w>70</w><h>80</h></coordinates><panel_attributes>lt=&lt;.
+extends</panel_attributes><additional_attributes>10;60;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>690</x><y>460</y><w>100</w><h>120</h></coordinates><panel_attributes>lt=&lt;.
+extends</panel_attributes><additional_attributes>60;100;10;10</additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>570</x><y>270</y><w>200</w><h>50</h></coordinates><panel_attributes>Verwalte Anbauflächen</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>210</y><w>210</w><h>190</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>190;15;10;170</additional_attributes></element></diagram>
\ No newline at end of file