Flags

Side flags

These are flags, which specify, for which side a version, a file or a relation was made.

client This flag specifies, that the version, relation or file can be installed on the client side
server This flag specifies, that the version, relation or file can be installed on the server side

These are flags, which can be set for versions.

instance This flag specifies, that this is a version of an instance addon. Instance addons represent instances of Minecraft itself, while non-instance addons have to be installed into an existing instance of Minecraft.

These are flags, which describe the relation between the addon and related addons or files.

required This flag specifies, that the related addon or file is required for the addon. If the addon gets installed, than any relation or file, which has this flag set, also has to be installed.
optional This flag specifies, that the related addon or file is optional for this addon. If the addon gets installed, the user should be able to choose, whether he wants to install the relation or file with this flag, or not. This flag can be used in combination with the conditions property.

These are relational flags, which can only be used for relations.

included This flag specifies, that the related addon is included in this one. This also means, that if some addon requires the related addon, it can also be installed with this addon instead.
incompatible This flag specifies, that the related addon is incompatible to this one. This means, that they can't be installed together in the same instance.
launch This flag specifies, that the related addon should take care of the Minecraft launch process. It can only be used, if both this and the related addon are instance addons.