Move the Version Numbering and Underscore section down. Add 'Name' to the end of the multi-letter section names.

Author: topperc

src/naming.adoc

@@ -45,35 +45,6 @@ Some ISA extensions depend on the presence of other extensions, e.g.,
 may be implicit in the ISA name: for example, RV32IF is equivalent to
 RV32IFZicsr, and RV32ID is equivalent to RV32IFD and RV32IFDZicsr.
 
-=== Version Numbers
-
-Recognizing that instruction sets may expand or alter over time, we
-encode extension version numbers following the extension name. Version
-numbers are divided into major and minor version numbers, separated by a
-"p". If the minor version is "0", then "p0" can be omitted from
-the version string. Changes in major version numbers imply a loss of
-backwards compatibility, whereas changes in only the minor version
-number must be backwards-compatible. For example, the original 64-bit
-standard ISA defined in release 1.0 of this manual can be written in
-full as "RV64I1p0M1p0A1p0F1p0D1p0", more concisely as
-"RV64I1M1A1F1D1".
-
-We introduced the version numbering scheme with the second release.
-Hence, we define the default version of a standard extension to be the
-version present at that time, e.g., "RV32I" is equivalent to
-"RV32I2".
-
-=== Underscores
-
-Underscores "_" may be used to separate ISA extensions to improve
-readability and to provide disambiguation, e.g., "RV32I2_M2_A2".
-
-Because the "P" extension for Packed SIMD can be confused for the
-decimal point in a version number, it must be preceded by an underscore
-if it follows a number. For example, "rv32i2p2" means version 2.2 of
-RV32I, whereas "rv32i2_p2" means version 2.0 of RV32I with version 2.0
-of the P extension.
-
 === Additional Standard Unprivileged Extension Names
 
 Standard unprivileged extensions can also be named by using a single "Z" followed by an
@@ -94,7 +65,7 @@ All multi-letter extensions, including those with the "Z" prefix, must be
 separated from other multi-letter extensions by an underscore, e.g.,
 "RV32IMACZicsr_Zifencei".
 
-=== Supervisor-level Instruction-Set Extensions
+=== Supervisor-level Instruction-Set Extension Names
 
 Standard extensions that extend the supervisor-level virtual-memory
 architecture are prefixed with the letters "Sv", followed by an alphabetical
@@ -112,7 +83,7 @@ Standard supervisor-level extensions should be listed after standard
 unprivileged extensions. If multiple supervisor-level extensions are
 listed, they should be ordered alphabetically.
 
-=== Hypervisor-level Instruction-Set Extensions
+=== Hypervisor-level Instruction-Set Extension Names
 
 Standard extensions that extend the hypervisor-level architecture are prefixed
 with the letters "Sh".
@@ -125,7 +96,7 @@ described in the previous section.
 The "Sh" prefix is used by the few hypervisor-level extensions that have no
 supervisor-visible effects.
 
-=== Machine-level Instruction-Set Extensions
+=== Machine-level Instruction-Set Extension Names
 
 Standard machine-level instruction-set extensions are prefixed with the
 letters "Sm".
@@ -151,6 +122,35 @@ Bargle may be named "RV64IZifencei_Xargle_Xbargle".
 If multiple non-standard extensions are listed, they should be ordered
 alphabetically.
 
+=== Version Numbers
+
+Recognizing that instruction sets may expand or alter over time, we
+encode extension version numbers following the extension name. Version
+numbers are divided into major and minor version numbers, separated by a
+"p". If the minor version is "0", then "p0" can be omitted from
+the version string. Changes in major version numbers imply a loss of
+backwards compatibility, whereas changes in only the minor version
+number must be backwards-compatible. For example, the original 64-bit
+standard ISA defined in release 1.0 of this manual can be written in
+full as "RV64I1p0M1p0A1p0F1p0D1p0", more concisely as
+"RV64I1M1A1F1D1".
+
+We introduced the version numbering scheme with the second release.
+Hence, we define the default version of a standard extension to be the
+version present at that time, e.g., "RV32I" is equivalent to
+"RV32I2".
+
+=== Underscores
+
+Underscores "_" may be used to separate ISA extensions to improve
+readability and to provide disambiguation, e.g., "RV32I2_M2_A2".
+
+Because the "P" extension for Packed SIMD can be confused for the
+decimal point in a version number, it must be preceded by an underscore
+if it follows a number. For example, "rv32i2p2" means version 2.2 of
+RV32I, whereas "rv32i2_p2" means version 2.0 of RV32I with version 2.0
+of the P extension.
+
 === Subset Naming Convention
 
 <<isanametable>> summarizes the standardized extension