Glossary entries reworked and slightly expanded

- ProcessingGraph: text slightly expanded

 - Project: corrcted and text slightly modified

 - RenderTask: corrected

 - Viewer: corrected and somewhat modified

 - AssetsView corrected.

 - InputDevice

doc/user/intro/Glossary.txt

@@ -7,10 +7,9 @@ explanations, the long explanation is the topic of the document above..'
 
  anchor:AssetsView[] link:#AssetsView[->]Assets View::
 	Windows displaying and managing various things that can be edited,
-	worked on, etc   are collectively known as the Assets View.
+	worked on, etc are collectively known as the Assets View.
-	Ingested footage, clips that have already been composed, available
+	AssetsView consists of ingested footage, clips that have already been composed, available
-	sub-projects, effects, transitions and internal artifacts are typical
+	sub-projects, effects, transitions and internal artifacts.
-	examples.
 
  anchor:Builder[] link:#Builder[->]Builder::
         This is a kind of compiler that creates low-level, or processing, graphs
@@ -51,7 +50,9 @@ explanations, the long explanation is the topic of the document above..'
 
  anchor:InputDevice[] link:#InputDevice[->]Input Device::
         Some hardware controler, like an extra keyboard, midi mixer, Jog, ..
-        TODO: decide on whether the main keyboard is in a special (global) state.
+        TODO: we still need to decide on whether we can treat the main keyboard 
+        as special global state or whether we can handle the keyboard as a generic 
+        input devide. 
 
  anchor:LowLevelModel[] link:#LowLevelModel[->]Low Level Model::
         The generated Processing Graph, to be ``performed'' within the engine
@@ -107,18 +108,18 @@ explanations, the long explanation is the topic of the document above..'
         media data needed for playback.
 
  anchor:ProcessingGraph[] link:#ProcessingGraph[->]Processing Graph::
-        Rendering is expressed as detailed network of Nodes, each defining a
+        Rendering is expressed as a detailed network of nodes. The edges can be
-        processing step.
+        envisaged as data flow, while the nodes represent data processing.
 
  anchor:Project[] link:#Project[->]Project::
-        the top-level context in which all edit work is done over an extended
+        The top-level context in which all editing is done over an extended
-        period of time. The Project can be saved and re-opened. It is
+        period of time. A Project can be saved and re-opened. It consists of
-        comprised of the collection of all things the user is working on, it
+        various things a user is working on: user-information, assets, state and
-        contains all informations, assets, state and objects to be edited.
+        objects to be edited. 
 
  anchor:RenderTask[] link:#RenderTask[->]RenderTask::
-        basically a PlayController, but collecting output directly, without
+        This is basically a PlayController, but directly collects output without
-        moving a PlayheadCursor (maybe a progress indicator) and not operating
+        moving a PlayheadCursor (could be a progress indicator) and not operating
         in a timed fashion, but freewheeling or in background mode
 
  anchor:RulesSystem[] link:#RulesSystem[->]Rules System::
@@ -214,10 +215,11 @@ explanations, the long explanation is the topic of the document above..'
         overlays (masking etc.). When attached to a timeline, a viewer
         reflects the state of the timeline's associated PlayController, and it
         attaches to the timeline's global pipes (stream-type match or
-        explicitly), showing video as monitor image and sending audio to the
+        explicitly), showing video as a monitor image and sending audio to the
-        system audio port. Possible extensions are for a viewer to be able to
+        system audio port. A number of supplimentary features are possible: the
-        attach to probe points within the render network, to show a second
+        viewer could  support the ability to attach to view points within the
-        stream as (partial) overlay for comparison, or to be collapsed to a
+        render network; the capability to display a second stream as an overlay
-        mere control for sending video to a dedicated monitor (separate X
+        (partially) which would enable user comparison or it might even be
-        display or firewire)
+        possible to allow the Viewer to be collapsed to a control, thus,
-
+        allowing a video to be sent to a dedicated monitor, e.g., to a separate
+        X/-display or to a firewire.