Returns the header card prior to the currently set mark position and decrements the mark position by one. The mark position determines the location at which new entries are added to the header. The mark is set either to just prior a particular card (e.g. via #findCard(IFitsHeader). @return
()
| 1931 | * @since 1.18.1 |
| 1932 | */ |
| 1933 | public HeaderCard prevCard() { |
| 1934 | if (cursor().hasPrev()) { |
| 1935 | return cursor().prev(); |
| 1936 | } |
| 1937 | return null; |
| 1938 | } |
| 1939 | |
| 1940 | /** |
| 1941 | * Create a header which points to the given data object. |