diff --git a/CMakeLists.txt b/CMakeLists.txt
index fc595582..951644fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,7 +41,7 @@ add_subdirectory(utest)
 add_subdirectory(docs)
 
 # ----------------------------------------------------------------
-# provide find_package() support for reactor customers
+# provide find_package() support for projects using this library
 
 set(SELF_LIB xo_unit)
 xo_add_headeronly_library(${SELF_LIB})
diff --git a/docs/quantity-class.rst b/docs/quantity-class.rst
index 2945026e..9e1d2c01 100644
--- a/docs/quantity-class.rst
+++ b/docs/quantity-class.rst
@@ -32,6 +32,12 @@ The simplest way to create a quantity instance is to use either
 *  factory functions in ``xo::unit::qty``, see :doc:`quantity-factoryfunctions`
 *  unit variables in ``xo::unit::units``, see :doc:`quantity-unitvars`
 
+Assignment
+----------
+
+.. doxygengroup:: quantity-assignment
+   :content-only:
+
 Access Methods
 --------------
 
@@ -63,8 +69,10 @@ Support methods for arithmetic operations
 .. doxygengroup:: quantity-arithmeticsupport
    :content-only:
 
-Assignment
+Comparison
 ----------
 
-.. doxygengroup:: quantity-assignment
+Support methods for comparison operators
+
+.. doxygengroup:: quantity-comparisonsupport
    :content-only:
diff --git a/utest/CMakeLists.txt b/utest/CMakeLists.txt
index 97d1afa1..d88e7450 100644
--- a/utest/CMakeLists.txt
+++ b/utest/CMakeLists.txt
@@ -1,4 +1,4 @@
-# build unittest observable/utest
+# xo-unit/utest/CMakeLists.txt
 
 set(SELF_EXECUTABLE_NAME utest.unit)
 set(SELF_SOURCE_FILES