Returns a pointer to the physical string in the SV. The SV must contain a
string.
-During autoloading, if the AUTOLOAD routine is an XSUB, C<SvPVX(cv)>
-returns the name of the subroutine for which AUTOLOAD was invoked.
-Likewise, C<SvCUR(cv)> returns the length, and C<SvUTF8(cv)> returns true
-if the name is in UTF8.
+This is also used to store the name of an autoloaded subroutine in an XS
+AUTOLOAD routine. See L<perlguts/Autoloading with XSUBs>.
=for apidoc Am|STRLEN|SvCUR|SV* sv
Returns the length of the string which is in the SV. See C<SvLEN>.