diff --git a/README.md b/README.md
index 8d53aa2..24a9e17 100644
--- a/README.md
+++ b/README.md
@@ -235,19 +235,23 @@ Use `trace` only while debugging a concrete problem. It may include submitted bi
 
 ### `nwwebui` service log level
 
-The `nwwebui` service has its own numeric log level:
+The `nwwebui` service has its own named log level:
 
 ```perl
-$nw_log_level  = 'info';
+$nw_log_level = 'info';
 ```
 
-Typical meanings:
+Supported values:
 
-- `0` = errors only
-- `1` = informational messages
-- `2` = debug output
+```text
+error   = only real errors
+warning = errors and warnings
+info    = normal operational messages
+debug   = additional diagnostic information
+trace   = very verbose request/connection tracing
+```
 
-## Installed components
+Older numeric values are still accepted for compatibility, but named values are preferred.## Installed components
 
 ### Binaries