This function indicates whether Column view is defined in the document type configuration file (.dcf) for the indicated document.

The doc parameter is the document for which you are performing the check. If doc is omitted or set to zero, the current document is used.

The function returns 1 (true) if Column view is defined in the .dcf file or 0 (false) if Column view is not defined. A Column view does not need to be currently displayed for this function to return true.