returns the t-to-last frame . for example , getlastframe 0 returns the last frame added by addframe frame . concode_field_sep LinkedList<ScreenMatrix> frames concode_elem_sep int maxLength concode_field_sep int maxHistoryLength concode_elem_sep Object clone concode_elem_sep void addFrame concode_elem_sep void removeLast
ScreenMatrix function ( int arg0 ) { return frames . get ( frames . size ( ) - arg0 - 1 ) ; }