3.1– Installer optionsUpdate magvar table: will update magdec.bgl file (grayed if already set to latest version),Use alternate airport files: will select for the Europe region, another set of files (see Chapter 4 for differences between these normal and alternate sets),Set military TACANs azimuth: will replace TACAN DME only data (civilian use) with VORTAC information (military). This option is only available in FSX and P3Dv1. TACANs and VORTACS will always be correctly defined in P3Dv2 and above,Force Full Install: will update all selected files without checking date/time stamp of current existing files (only to be used in case of confirmed lack of update of some files, preferably on author’s request)Log Install replacements: will create an [Installer_Actions.log] file in program directory on Install action (to be used for support in case of problem, see chapter 7)