diff --git a/brouter-routing-app/assets/modes.zip b/brouter-routing-app/assets/modes.zip
index 7e02ada..fffd38d 100644
Binary files a/brouter-routing-app/assets/modes.zip and b/brouter-routing-app/assets/modes.zip differ
diff --git a/brouter-routing-app/assets/profiles2.zip b/brouter-routing-app/assets/profiles2.zip
index a62bfdc..9912472 100644
Binary files a/brouter-routing-app/assets/profiles2.zip and b/brouter-routing-app/assets/profiles2.zip differ
diff --git a/brouter-routing-app/assets/readmes.zip b/brouter-routing-app/assets/readmes.zip
index 0fbcf7d..486e3ec 100644
Binary files a/brouter-routing-app/assets/readmes.zip and b/brouter-routing-app/assets/readmes.zip differ
diff --git a/brouter-routing-app/assets/segments3.zip b/brouter-routing-app/assets/segments3.zip
index 4d25c44..ba435e3 100644
Binary files a/brouter-routing-app/assets/segments3.zip and b/brouter-routing-app/assets/segments3.zip differ
diff --git a/misc/readmes/profile_developers_guide.txt b/misc/readmes/profile_developers_guide.txt
index 43bbaca..649c131 100644
--- a/misc/readmes/profile_developers_guide.txt
+++ b/misc/readmes/profile_developers_guide.txt
@@ -176,6 +176,8 @@ are possible:
 - additional "=" symbol for "assign"operations:
   assign <variable-name> = <expression>
 
+- boolean constants: "true" and "false" can be used instead of 1 and 0
+
 Please note the the tokenizer always expects blank space to separate
 symbols and expressions so it is not allowed to places parentheses or
 the "=" symbol without separating blank space!