diff --git a/docs/class-diagram-definition.uxf b/docs/class-diagram-definition.uxf
index 8d2a79af..f6a59389 100644
--- a/docs/class-diagram-definition.uxf
+++ b/docs/class-diagram-definition.uxf
@@ -459,7 +459,7 @@ group=2</panel_attributes>
       <h>40</h>
     </coordinates>
     <panel_attributes>picocli 3.6.0
-2018-09-10
+2018-09-12
 bg=#FFFF66</panel_attributes>
     <additional_attributes/>
   </element>
diff --git a/docs/class-diagram-exceptions.uxf b/docs/class-diagram-exceptions.uxf
index 917f166a..8a06b1f3 100644
--- a/docs/class-diagram-exceptions.uxf
+++ b/docs/class-diagram-exceptions.uxf
@@ -271,7 +271,7 @@ bg=#99FF99</panel_attributes>
       <h>50</h>
     </coordinates>
     <panel_attributes>picocli 3.6.0
-2018-09-10
+2018-09-12
 bg=#FFFF66</panel_attributes>
     <additional_attributes/>
   </element>
diff --git a/docs/class-diagram-help-api.uxf b/docs/class-diagram-help-api.uxf
index 72d3b409..bc78b610 100644
--- a/docs/class-diagram-help-api.uxf
+++ b/docs/class-diagram-help-api.uxf
@@ -22,7 +22,7 @@ CommandLine.Help</panel_attributes>
       <h>50</h>
     </coordinates>
     <panel_attributes>picocli 3.6.0
-2018-09-10
+2018-09-12
 bg=#FFFF66</panel_attributes>
     <additional_attributes/>
   </element>
diff --git a/docs/class-diagram-parsing.uxf b/docs/class-diagram-parsing.uxf
index c6ab2326..c9abfec3 100644
--- a/docs/class-diagram-parsing.uxf
+++ b/docs/class-diagram-parsing.uxf
@@ -662,7 +662,7 @@ group=9</panel_attributes>
       <h>40</h>
     </coordinates>
     <panel_attributes>picocli 3.6.0
-2018-09-10
+2018-09-12
 bg=#FFFF66</panel_attributes>
     <additional_attributes/>
   </element>
@@ -743,10 +743,10 @@ invoke, run or call methods with @Command
 methods or @Command classes implementing
 Runnable or Callable to do all of the below
 with one line of code:
-* parsing user input
-* error handling
-* requests for help or version info
-* invoking the business logic
+* parse user input
+* handle invalid arguments
+* handle requests for help or version info
+* invoke the business logic
 bg=#FFFF66</panel_attributes>
     <additional_attributes/>
   </element>
diff --git a/src/main/java/picocli/doc-files/class-diagram-definition.png b/src/main/java/picocli/doc-files/class-diagram-definition.png
index 34f29088..732da435 100644
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diff --git a/src/main/java/picocli/doc-files/class-diagram-exceptions.png b/src/main/java/picocli/doc-files/class-diagram-exceptions.png
index 59de5f10..d5f86270 100644
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diff --git a/src/main/java/picocli/doc-files/class-diagram-help-api.png b/src/main/java/picocli/doc-files/class-diagram-help-api.png
index ac45bb56..d4618452 100644
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diff --git a/src/main/java/picocli/doc-files/class-diagram-parsing.png b/src/main/java/picocli/doc-files/class-diagram-parsing.png
index dcfbd330..65a75e57 100644
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