# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1394489561 -3600
# Node ID 32c9d23850b09ae55bdb809473134cd13d045354
# Parent  799f9a912fe6901411ad6c0fe4dc9db0b616b088
Removed an old topic and added notes on active code detection.

diff -r 799f9a912fe6 -r 32c9d23850b0 docs/concepts.txt
--- a/docs/concepts.txt	Mon Mar 10 23:10:14 2014 +0100
+++ b/docs/concepts.txt	Mon Mar 10 23:12:41 2014 +0100
@@ -5,11 +5,11 @@
 
   * Namespaces and attribute definition
   * Attribute usage observations
+  * Active code deduction
   * Imports and circular import detection
   * Contexts and values
   * Tables, attributes and lookups
   * Parameters and lookups
-  * List and tuple representations
 
 Namespaces and Attribute Definition
 ===================================
@@ -98,6 +98,16 @@
 and class definition "locals" can be reliably employed in attribute usage
 observations. 
 
+Active Code Deduction
+=====================
+
+With information about the attributes provided by each object, it becomes
+possible to deduce which code is active and which code is unused in a program.
+This process involves the collection of attribute references, the
+identification of currently unused objects, and the propagation of this new
+object information to parts of the program where attribute usage may now
+involve such objects.
+
 Imports and Circular Import Detection
 =====================================