[class.copy.assign] Tweak style and indexing, remove "user-declared"

Author: frederick-vs-ja

source/classes.tex

@@ -1704,14 +1704,10 @@
 \rSec2[class.copy.assign]{Copy/move assignment operator}%
 
 \pnum
-\indextext{assignment operator!copy|(}%
-\indextext{assignment operator!move|(}%
 \indextext{special member function|see{assignment operator}}%
 \indextext{copy!class object|see{assignment operator, copy}}%
-\indextext{move!class object|see{assignment operator, move}}%
 \indextext{operator!copy assignment|see{assignment operator, copy}}%
-\indextext{operator!move assignment|see{assignment operator, move}}%
-A user-declared \term{copy} assignment operator \tcode{X::operator=} is a
+A \defnadj{copy}{assignment operator} \tcode{X::operator=} is a
 non-static non-template member function of class \tcode{X} with exactly one
 non-object parameter of type \tcode{X}, \tcode{X\&}, \tcode{const X\&},
 \tcode{volatile X\&}, or \tcode{const volatile X\&}.
@@ -1793,7 +1789,9 @@
 \end{codeblock}
 
 \pnum
-A user-declared move assignment operator \tcode{X::operator=} is
+\indextext{move!class object|see{assignment operator, move}}%
+\indextext{operator!move assignment|see{assignment operator, move}}%
+A \defnadj{move}{assignment operator} \tcode{X::operator=} is
 a non-static non-template member function of class \tcode{X} with exactly
 one non-object parameter of type \tcode{X\&\&}, \tcode{const X\&\&}, \tcode{volatile X\&\&}, or
 \tcode{const volatile X\&\&}.