Command line functions
RTW and BI have various helpful command line functions, some of which are listed below. To add a command line function, right click your desktop shortcut, select properties, and after the last " type a space and the function you require. More than one function can be added to the same line, just remember to put a space between each. Finished result can look like:
Possible Command Line Functions
-show_err every modders best friend, gives basic error messages for most problems. Anyone modifying game files or playing a mod should use it.
-mod:my_mod the user friendly way of releasing a mod. Also useful for home mods. Saves having to have multiple RTW/BI installs and allow multiple mods to run on the same installation. Temporary link to info: http://forums.totalwar.org/vb/showthread.php?t=44332 (needs summarising here)
-ne allows game to run in windowed mode. Leave a program or file open before you start the game and use alt-tab to return to that program or your desktop without quitting game. You can alt-tab out of game anyway but this allows game to keep running in the background. Useful if waiting out siege battles or using -ai (see below)
-nm disables the introductory videos giving quicker start. Removes the need to hit Esc to stop videos when loading. Sounds minor but when modding after the 100th restart you'll understand.
-sprite_script disables the game but makes sprites for you instead. Temporary link to info: http://forums.totalwar.org/vb/showthread.php?t=44180 (needs summarising here)
-movie_cam functions in replays of custom battles, gives you more control over viewing angle. Useful for taking screen shots. For more information see here: http://www.twcenter.net/forums/showthread.php?t=49260
I'm sure there's more - please add any others to list above.