clc_calculate_rural: For a vector of postal codes, identify which ones are in...
In context-dependent/clccommunities: What the Package Does (One Line, Title Case)

For a vector of postal codes, identify which ones are in rural communities

1	clc_calculate_rural(postal_code, sac_index_threshold = 4, format = "label")

`postal_code`	A vector of postal codes
`sac_index_threshold`	The lowest SAC index that should be classified as rural. Defaults to 4 (moderate metropolitan influence zone)
`format`	The format of the return vector. Either "label" (the default), or "indicator". If the format is "label", the returned vector will be a factor with verbose category labels. If the format is "indicator", the returned vector will be a numeric boolean (1, 0, or NA)