Initial revision

[flightgear.git] / docs-mini / README.xmlsound

diff --git a/docs-mini/README.xmlsound b/docs-mini/README.xmlsound
index 4b9632340eaf2774ed08bd852bc2cf034c4d9c06..c8ed950cf2efc990aa805b042f66ac36f6930c1d 100644 (file)
--- a/docs-mini/README.xmlsound
+++ b/docs-mini/README.xmlsound
@@ -155,7 +155,17 @@ Configuration description:
  
      <property>
        Defins which property supplies the value for the calculation.
+       Either a <property> or an <internal> should be defined.
        The value is treatened as a floating point number.
+
+     <internal>
+       Defins which internal variable should be used for the calculation.
+       The value is treatened as a floating point number.
+       The following internals are available at this time:
+
+       dt_play:        the number of seconds since the sound started playing.
+
+       dt_stop:        the number of seconds after the sound has stopped.
  
      <type>
        Defines the function that should be used upon the property