Config Side
SSCL has three config sides.
CLIENT
For client-only configs.
ConfigSide.CLIENT
These configs are editable in Mod Menu.
SERVER
For server-side configs.
ConfigSide.SERVER
These are also shown in Mod Menu.
When the client is not connected to a remote server, they can be edited normally.
When connected to a dedicated/remote server, they are shown but disabled. The client doesn't try to read or modify the remote server's config.
A local singleplayer server is considered local, so SERVER configs are still editable there.
COMMON
For configs that are used by both sides.
ConfigSide.COMMON
These are editable in Mod Menu.
SSCL does not automatically sync COMMON configs between client and server.
Tip
It's a best practice to create client configs for client-specific things and server configs for server-specific things.