The following definitions are applicable to this article:
(1) PREMISES. Such term includes any "building," as herein defined, and any real property.
(2) BUILDING. Any structure which may be entered and utilized by persons for business, public use, lodging or the storage of goods, and such term includes any vehicle, aircraft or watercraft used for the lodging of persons or carrying on business therein, and such term includes any railroad box car or other rail equipment or trailer or tractor trailer or combination thereof. Where a building consists of two or more units separately occupied or secure, each shall be deemed both a separate building and a part of the main building.
(3) DWELLING. A building which is used or normally used by a person for sleeping, living or lodging therein.
(4) ENTER OR REMAIN UNLAWFULLY. A person "enters or remains unlawfully" in or upon premises when he is not licensed, invited or privileged to do so. A person who, regardless of his intent, enters or remains in or upon premises which are at the time open to the public does so with license and privilege unless he defies a lawful order not to enter or remain, personally communicated to him by the owner of such premises or other authorized person.
A license or privilege to enter or remain in a building which is partly open to the public is not a license or privilege to enter or remain in that part of the building which is not open to the public. A person who enters or remains upon unimproved and apparently unused land, which is neither fenced nor otherwise enclosed in a manner designed to exclude intruders, does so with license and privileges unless notice against trespass is personally communicated to him by the owner of such land or other authorized person, or unless such notice is given by posting in a conspicuous manner.
(Acts 1977, No. 607, p. 812, §2601; Acts 1983, No. 83-742, p. 1222.)