[conv] Replace \term with \defn or \defnx

source/conversions.tex

@@ -10,8 +10,7 @@
 \indextext{conversion!implicit}%
 Standard conversions are implicit conversions with built-in meaning.
 \ref{conv} enumerates the full set of such conversions. A
-\indextext{sequence!standard conversion}%
-\term{standard conversion sequence} is a sequence of standard
+\defnx{standard conversion sequence}{conversion sequence!standard} is a sequence of standard
 conversions in the following order:
 
 \begin{itemize}
@@ -60,16 +59,14 @@
 
 \pnum
 An expression \tcode{e} can be
-\indextext{conversion!implicit}%
-\term{implicitly converted} to a type \tcode{T} if and only if the
+\defnx{implicitly converted}{conversion!implicit} to a type \tcode{T} if and only if the
 declaration \tcode{T t=e;} is well-formed, for some invented temporary
 variable \tcode{t}\iref{dcl.init}.
 
 \pnum
 Certain language constructs require that an expression be converted to a Boolean
 value. An expression \tcode{e} appearing in such a context is said to be
-\indextext{conversion!contextual to \tcode{bool}}%
-\term{contextually converted to \tcode{bool}} and is well-formed if and only if
+\defnx{contextually converted to \tcode{bool}}{conversion!contextual to \tcode{bool}} and is well-formed if and only if
 the declaration \tcode{bool t(e);} is well-formed, for some invented temporary
 variable \tcode{t}\iref{dcl.init}.
 
@@ -393,7 +390,7 @@
 one.
 
 \pnum
-These conversions are called \term{integral promotions}.
+These conversions are called \defnx{integral promotions}{integral promotion}.
 
 \rSec1[conv.fpprom]{Floating-point promotion}
 
@@ -403,7 +400,7 @@
 \tcode{double}. The value is unchanged.
 
 \pnum
-This conversion is called \term{floating-point promotion}.
+This conversion is called \defn{floating-point promotion}.
 
 \rSec1[conv.integral]{Integral conversions}
 
@@ -490,10 +487,9 @@
 \pnum
 \indextext{conversion!pointer}%
 \indextext{null pointer conversion|see{conversion, null pointer}}%
-\indextext{pointer!zero}%
-\indextext{constant!null pointer}%
+\indextext{pointer!zero|see{value, null pointer}}%
 \indextext{value!null pointer}%
-A \term{null pointer constant} is an integer literal\iref{lex.icon} with
+A \defnx{null pointer constant}{constant!null pointer} is an integer literal\iref{lex.icon} with
 value zero
 or a prvalue of type \tcode{std::nullptr_t}. A null pointer constant can be
 converted to a pointer type; the
@@ -532,14 +528,14 @@
 
 \pnum
 \indextext{conversion!pointer-to-member}%
+\indextext{null member pointer conversion|see{conversion, null member pointer}}%
 \indextext{constant!null pointer}%
-\indextext{value!null member pointer}%
 A null pointer constant\iref{conv.ptr} can be converted to a
 pointer-to-member
-type; the result is the \term{null member pointer value}
+type; the result is the \defnx{null member pointer value}{value!null member pointer}
 of that type and is distinguishable from any pointer to member not
 created from a null pointer constant.
-Such a conversion is called a \term{null member pointer conversion}.
+Such a conversion is called a \defnx{null member pointer conversion}{conversion!null member pointer}.
 Two null member pointer values of
 the same type shall compare equal. The conversion of a null pointer
 constant to a pointer to member of cv-qualified type is a single