Block Format Keyword Definition of lines inside the box.


Only one box_ID is allowed.
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/LINE/BOX/line_ID/unit_ID or /LINE/BOX2/line_ID/unit_ID


Field Contents SI Unit Example
line_ID Line group identifier

(Integer, maximum 10 digits)

unit_ID Unit Identifier

(Integer, maximum 10 digits)

line_title Line group title

(Character, maximum 100 characters)

box_ID Box identifier, which is defined in Boxes

(Integer, maximum 10 digits)



  1. Lines are used to define interfaces in 2D analysis and interface TYPE8, TYPE11 and TYPE20 in 3D analysis.
  2. All nodes must belong to a shell, brick, triangular shell, truss, or beam element.
  3. If type is BOX, all elements having all nodes inside the box or on its surface are selected.

    If type is BOX2, all elements with at least one node inside the box or on its external surface are selected.