XPLM_API void       XPLMReloadScenery(void);

XPLMReloadScenery reloads the current set of scenery. You can use this function in two typical ways: simply call it to reload the scenery, picking up any new installed scenery, .env files, etc. from disk. Or, change the lat/ref and lon/ref data refs and then call this function to shift the scenery environment. This routine is equivalent to picking “reload scenery” from the developer menu.