A conveyor comprising: a conveyor frame; an endless conveyor belt supported in the frame; a drive system driving the conveyor belt in a direction of belt travel; wherein the conveyor belt includes: an endless belt body (62, 236, 263, 282) having a top and an opposite bottom extending laterally from a first side to a second side and longitudinally in a direction of belt travel; wherein the belt body (62, 236, 263, 282) includes a plurality of openings extending through the belt body from the top to the bottom and indented laterally inward of the first and second sides and spaced apart longitudinally; a plurality of doors (84, 96, 97, 100, 101, 114, 115, 164, 165, 174, 178, 179, 182, 183, 184, 234, 264, 286, 306) associated with the plurality of openings and movably attached to the belt body for movement from first positions occluding the openings to support articles in the openings to second positions away from the openings to release articles through the openings; and characterized in that the endless belt body comprises a series of rows of belt modules (74, 75, 75') linked together end to end at lateral joints formed by interdigitated fingers (76, 76') of consecutive rows to allow the conveyor belt to articulate at the lateral joints when entering or exiting an inline or a decline. a conveyor frame; an endless conveyor belt supported in the frame; a drive system driving the conveyor belt in a direction of belt travel; wherein the conveyor belt includes: an endless belt body (62, 236, 263, 282) having a top and an opposite bottom extending laterally from a first side to a second side and longitudinally in a direction of belt travel; wherein the belt body (62, 236, 263, 282) includes a plurality of openings extending through the belt body from the top to the bottom and indented laterally inward of the first and second sides and spaced apart longitudinally; a plurality of doors (84, 96, 97, 100, 101, 114, 115, 164, 165, 174, 178, 179, 182, 183, 184, 234, 264, 286, 306) associated with the plurality of openings and movably attached to the belt body for movement from first positions occluding the openings to support articles in the openings to second positions away from the openings to release articles through the openings; and characterized in that the endless belt body comprises a series of rows of belt modules (74, 75, 75') linked together end to end at lateral joints formed by interdigitated fingers (76, 76') of consecutive rows to allow the conveyor belt to articulate at the lateral joints when entering or exiting an inline or a decline. an endless belt body (62, 236, 263, 282) having a top and an opposite bottom extending laterally from a first side to a second side and longitudinally in a direction of belt travel; wherein the belt body (62, 236, 263, 282) includes a plurality of openings extending through the belt body from the top to the bottom and indented laterally inward of the first and second sides and spaced apart longitudinally; a plurality of doors (84, 96, 97, 100, 101, 114, 115, 164, 165, 174, 178, 179, 182, 183, 184, 234, 264, 286, 306) associated with the plurality of openings and movably attached to the belt body for movement from first positions occluding the openings to support articles in the openings to second positions away from the openings to release articles through the openings; and characterized in that the endless belt body comprises a series of rows of belt modules (74, 75, 75') linked together end to end at lateral joints formed by interdigitated fingers (76, 76') of consecutive rows to allow the conveyor belt to articulate at the lateral joints when entering or exiting an inline or a decline.