I have found it! The manual reads:
Quote
15.3 Snow Textures with Night Textures
MSTS did not allow snow textures to be used with night textures. This meant having dark buildings when
running an activity at night when the weather is set to snow. It turns out that OR is able to run with
snow textures and night textures. To do this, you have to create the Night\ folder in the Textures\Snow\
directory and copy the needed textures into the Night\ folder. Doing this will allow night textures to be
visible when operating in snow at night. Keep in mind that the current night textures such as buildings
do not include snow so new textures will have to be created.
One warning, if you decide to do this, there is a possibility of experiencing resource issues.
MSTS uses the Textures/Night textures when running in snow at night. In my opinion this is basically correct. When running in snow at night, for example, you certainly do not want to see bright, snow-covered trees. You do see any lit building windows which are included in the Textures/Night folder textures. Are we saying that in OR the Textures/Snow textures will be shown when running in snow at night if there in not a Textures/Snow/Night folder folder?
I have another question based on this. If a texture is not shown in the Textures/Snow/Night folder, which is in the Textures/Snow folder, when running in snow at night, does OR default to the Textures/Snow folder version for this texture, is it an error condition or is it something else?