The headerMark parameter may be used to determine if the current element is a header element for an excluded mark.
If the markExcludedHeader parameter for a mark is on, the specified mark will have a header element when it is excluded. The header element is a show element (will not be saved with the file), and contains text that indicates how many lines are excluded. The headerMark parameter will return the name of the mark for which the current element is a header mark. If the current element is not a header mark, the headerMark parameter will return null.
query command
The current element of the current view.
query headerMark
query headerMark
query command
mark parameter
markExcluded parameter
markExcludedHeader parameter