This function returns 1 (True) if the content for the element identified by oid are displayed in the Document Map window. Otherwise, it returns 0.

If newval is specified, it changes the state of the content display for oid. If 0, the content is collapsed. If non-zero, the content lines for the element are displayed.

If descend is specified and non-zero, then oid_expose changes the exposed state of all children of oid, recursively.

Note, the effect of this function is visible in the Document Map and Column view only. The expose bit is independent of detailing, which is shown only in non-Document Map or Column views.