This string attribute can be used on a list_box only, to specify
the column labels of a multi-column list_box. The sub labels are
separated by the tab "\t" character. A newline "\n" character may
appera inside a sub label. If this attribute exists, the label
attribute of a list_box will be ignored. See list_box for an explanation about the
use of related attributes bcad_label, bcad_skip_next_child, label,
tabs, tab_truncate. If it exists it either sets the text contents
of a tile, either it displays a general label control in front of a
tile-specific control. For instance, the label attribute of a
toggle, sets the text contents
of its associated checkbox control. The label attribute of an
edit_box places a text label
in front of its associated edit control.
related tiles
The bcad_label attribute has a predefined meaning on a list_box only.