Where it is possible to have two or more cockpits available for selection via
the global vars file, is it possible to write a file or place an instruction
within a present file that enables and disables the cockpit and dash positioning
tweak data for the respective cockpit. eg., Shroeder's 2005 version works on
default settings so this is left disabled, but Nicola Acciarri's version require
a tweak, and therefore will have to be enabled - can two versions of the
tweak_std files (one with the said tweaks enabled and the other, disabled) be
swapped ?