[Bf-docboard-svn] bf-manual: [7701] branches/blender-2.92-release/blender_docs/manual/compositing/types/matte/channel_key.rst: Compositor: Expand on channel key properties

[Aaron Carlisle]

Revision: 7701
          https://developer.blender.org/rBM7701
Author:   Blendify
Date:     2021-02-02 04:26:57 +0100 (Tue, 02 Feb 2021)
Log Message:
-----------
Compositor: Expand on channel key properties

Modified Paths:
--------------
    branches/blender-2.92-release/blender_docs/manual/compositing/types/matte/channel_key.rst

Modified: branches/blender-2.92-release/blender_docs/manual/compositing/types/matte/channel_key.rst
===================================================================
--- branches/blender-2.92-release/blender_docs/manual/compositing/types/matte/channel_key.rst	2021-02-02 03:25:17 UTC (rev 7700)
+++ branches/blender-2.92-release/blender_docs/manual/compositing/types/matte/channel_key.rst	2021-02-02 03:26:57 UTC (rev 7701)
@@ -31,22 +31,39 @@
    This button selects what color space the channels will represent.
 
    RGB, HSV, YUV, YCbCr
-Channel
-   This button selects the channel, defined by the Color Space, to use to determine the matte.
+
+Key Channel
+   This button selects the channel, defined by the *Color Space*, to use to determine the matte.
+
 Algorithm
-   Max, Single
-Limit
-   It is possible to have a separation between the two values to allow for a gradient of
-   transparency between foreground and background objects.
+   Method to calculate the the difference between levels.
 
-   High
-      Determines the lowest values that are considered foreground.
-      (Which is supposed to be -- relatively -- height values: from this value to 1.0.)
-   Low
-      Determines the highest values that are considered to be background objects.
-      (Which is supposed to be -- relatively -- low values: from 0.0 to this value.)
+   :Max:
+      Limit by the maximum of the other two channels other than the *Key Channel*.
+   :Single:
+      Limit by the maximum of the selected *Limiting Channel*.
+      Limit by the maximum of the selected *Limiting Channel*.
+      Limit by the maximum of the selected *Limiting Channel*.
+      Limit by the maximum of the selected *Limiting Channel*.
 
+      Limiting Channel
+         The channel to use when computing the maximum, the options are defined by the *Color Space*.
+         Limit by the maximum of the selected *Limiting Channel*.
 
+High
+   Determines the lowest values that are considered foreground.
+   (Which is supposed to be -- relatively -- height values: from this value to 1.0.)
+
+Low
+   Determines the highest values that are considered to be background objects.
+   (Which is supposed to be -- relatively -- low values: from 0.0 to this value.)
+
+.. tip::
+
+   It is possible to have a separation between the *High* and *Low* values to allow
+   for a gradient of transparency between foreground and background objects.
+
+
 Outputs
 =======