/* 0 on failure, 1 on success (vik file) 2 on success (other file) */
gshort a_file_load ( VikAggregateLayer *top, VikViewport *vp, const gchar *filename );
/* 0 on failure, 1 on success (vik file) 2 on success (other file) */
gshort a_file_load ( VikAggregateLayer *top, VikViewport *vp, const gchar *filename );