In addition to the standard appSettings that are pre-loaded in your default Umbraco web.config there are some settings, which are worth knowing about.
umbracoXsltPath – by adding this to appSettings you can specify a new/different folder for storing your xslt files and still be able to edit them within Umbraco. Default folder is ~/xslt.
umbracoUsercontrolsPath – by adding this to appSettings you can specify a new/different folder for storing your UserControls. Default folder is ~/usercontrols.
umbracoMasterPagesPath – by adding this to appSettings you can specify a new/different folder for storing your Masterpages. Default folder is ~/masterpages.
umbracoCssDirectory – by adding this to appSettings you can specify a new/different folder for storing your css-files and still be able to edit them within Umbraco. Default folder is ~/css.
umbracoMediaPath – by adding this to appSettings you can specify a new/different folder for storing your media files. Default folder is ~/media.
umbracoScriptsPath – by adding this to appSettings you can specify a new/different folder for storing your javascript files and still be able to edit them within Umbraco. Default folder is ~/scripts.