It would be helpful to me to be able to put separate comment lines, or add comments at the end of each existing line. Anyone know how?

yea, put a colon after the entry, then put the coment in eg:SEE_SELF=1 ; 1 to show virtual cockpit in 2D cockpit

At the end of the line you want to add the comment, start it with //comment here.Here is some examples from the default Cessna 172:[GeneralEngineData]engine_type = 0 //0=Piston, 1=Jet, 2=None, 3=Helo-Turbine, 4=Rocket, 5=TurbopropEngine.0 = 2.4, 0.0, 0.0 //(feet) longitudinal, lateral, vertical distance from reference datumfuel_flow_scalar= 0.88 //Fuel flow scalarmin_throttle_limit = 0.0 //Minimum percent throttle. Generally negative for turbine reverser[piston_engine]power_scalar = 1.0 //Piston power scalarcylinder_displacement= 90.0 //Cubic inches per cylindercompression_ratio= 8.5 //Compression rationumber_of_cylinders=4 //Number of cylindersmax_rated_rpm= 2700 //Max rated RPMmax_rated_hp= 180 //Max rated HPfuel_metering_type= 0 //0=Fuel Injected, 1=Gravity Carburetor,

Yes I tried the semicolon and it works great. Thanks for the great tip.

whoops, i meant a semicolon :)

You might also try Ken Salter's FS9 Configurator:http://library.avsim.net/esearch.php?CatID...util&DLID=36310FS9 Configurator is a utility tool designed to provide an interface to the fs9.cfg (and other cfg files) file for Microsoft Flight Simulator 2004. It provides the following functions: 1) Allows for simplified traversal of the cfg files for FS9. 2) Allows addding/editing/removing key values. 3) Provides a mechanism for adding help comments for key values. 4) Allows for searching for key/data within a cfg file. 5) Allows for managing multiple versions of the fs9.cfg file. 6) Provides an interface to automatically launch FS9 with a specific fs9.cfg file. 7) Provides an interface to automatically launch FS9 with a specific saved flight. 8) Provides tools for common tasks: - Set Contrail Temp - Toggle Brake Message - Toggle Opening Screen - Toggle Average FPS - Toggle Visible Damage - Toggle AutoPilot wing leveler Filename: fs9cfg14.zip License: Freeware, limited distribution Added: 19th September 2003 Downloads: 12758 Author: Ken Salter Size: 343kb