Use proper key aliases in mappings.

vim/after/syntax/cplusplus.vim

@@ -3,6 +3,7 @@ if exists("b:current_syntax")
 endif
 
 syn include @cxxInDoxygen syntax/cpp.vim
+syn include @cxxInComment syntax/cpp.vim
 
 unlet b:current_syntax
 

vim/vimrc.keymaps

@@ -9,8 +9,8 @@ map Y y$
 
 map zz zM
 
-map [2~ :cp
-map [3~ :cn
+map <Ins> :cp
+map <Del> :cn
 
 "map _ :1,$!/opt/local/bin/clang-format-mp-3.9 -style=file
 :1,$!/opt/local/bin/uncrustify -q -lCPP -c ~/adamformat/adam.format.cfg