diff --git a/doc/source-tree.texi b/doc/source-tree.texi
index 7c1e80e..77a159d 100644
--- a/doc/source-tree.texi
+++ b/doc/source-tree.texi
@@ -131,18 +131,29 @@ exists.
 @node Test Directory
 @section Test Directory
 The @file{test/} directory contains all the unit tests for the project. ease.js
-follows a test-driven development model. Every single aspect of the framework is
+follows a test-driven development model; every single aspect of the framework is
 tested to ensure that features work as intended both server-side and across all
-supported web browsers. The tests also ensure that bugs are not introduced for
-anything that has been covered. This should also give outside developers
-confidence. If a developer makes a modification to ease.js and does not cause
-any failing tests, it's likely that their change didn't have negative
-consequences on the integrity of the framework.
+supported web browsers. The tests also serve as regression tests, ensuring that
+bugs are not introduced for anything that has been covered. These tests should
+also give outside developers confidence; if a developer makes a modification to
+ease.js and does not cause any failing tests, it's likely that their change
+didn't have negative consequences on the integrity of the framework.
 
-All tests are prefixed with @samp{test-}, followed by the name of the module,
-followed optionally by the specific part of the module that is being tested. The
-tests are written in JavaScript and use Node.js's @file{assert} module. They may
-be run individually or at once during the build process.
+ease.js is currently in a transition period in regards to the style of the test
+cases. Tests written in the original format are prefixed with @samp{test-},
+followed by the name of the module, followed optionally by the specific part of
+the module that is being tested. Newer test cases are prefixed with the
+prototype name of the unit being tested, followed by @samp{Test.js}. If there
+are a number of test cases for a given prototype, any number of tests will be
+included (with the same suffix) in a directory with the same name as the
+prototype. The tests are written in JavaScript and use Node.js's @file{assert}
+module. Newer tests use a test case system that was developed to suit the needs
+of the project (still using the @file{assert} module). They may be run
+individually or all at once during the build process.
+
+Developers interested in contributing to ease.js can aid in this transition
+process by helping to move all @file{test-*} tests over to the new test case
+format.
 
 In addition, there exists a @file{test/perf/} directory that contains
 performance tests used for benchmarking.