msgtype.RdThese identifiers indicate the type of a message so that the core can route it to the correct method in the recipient.
GETDATA()
SETDATA()
BIOME_SPLIT_CHAR()GETDATA: Message type for retrieving data from a component
SETDATA: Message type for setting data in a component
BIOME_SPLIT_CHAR: Character used to separate biome from variable name
Because these identifiers are provided as #define macros in the hector code,
these identifiers are provided in the R interface as function. Therefore,
these objects must be called to use them; e.g., GETDATA()
instead of the more natural looking GETDATA.