The Planning Board at its Tuesday meeting will discuss potential revisions to the town’s zoning aimed at allowing additional uses near the intersection of Pine and Holten streets. The possible changes are the focus of a study the Metropolitan Area Planning Council is conducting for the town. The triangular-shaped district is bounded by the Danvers Rail Trail to the south, Burroughs Street at Holten Street to the north, and Pine Street to the west. Town officials said the existing Industrial-1 district has been moving from exclusively industrial uses to a mix of residential and commercial ones. As an example, they point to the conversion of the former Methodist church on Holten Street to a ground-floor café and six apartments above. Several other buildings on the same street show that same pattern, with offices, services, and other businesses on the ground floor and residential units above. But the developers of those projects had to secure variances or other zoning relief because the district does not allow mixed use. The changes being considered would allow more such projects. In other business, the board will continue its discussion of zoning options regarding the location of medical marijuana facilities, and other possible zoning changes.