diff --git a/source/common.rb b/source/common.rb
index 6ad044b..ce39f63 100644
--- a/source/common.rb
+++ b/source/common.rb
@@ -1,13 +1,14 @@
 module Vrobot4
    Version = '4.00'.freeze
 
-   @@debug = false
-   def self.debug= set; @@debug = !!set; end
-   def self.debug     ; @@debug;         end
+   @@debug = 0
+   def self.debug= set; @@debug = set; end
+   def self.debug     ; @@debug;       end
 
    def self.log lv, *text
-      if lv != :DEBUG || @@debug
-         puts "[" + lv.to_s.center(8) + "] " + text.join(" ")
+      if (lv != :DEBUG  || @@debug >= 1) &&
+         (lv != :DEBUGV || @@debug >= 2)
+         puts "[" + lv.to_s.ljust(6) + "] " + text.join(" ")
       end
    end
 end
diff --git a/source/main.rb b/source/main.rb
index 26bab13..c1ad0e8 100644
--- a/source/main.rb
+++ b/source/main.rb
@@ -34,6 +34,8 @@ module Vrobot4
       begin;  cfg = YAML.load IO.read(cfgname)
       rescue; log :ERROR, "error reading bot config:", $!; exit; end
 
+      Vrobot4.debug = cfg["debug"] if cfg.has_key? "debug"
+
       begin
          bots  = []
          thrds = []