+#define ptrTabsize(sp) (sp ? &(sp->_TABSIZE) : &(_nc_prescreen._TABSIZE))
+#define ptrEscdelay(sp) (sp ? &(sp->_ESCDELAY) : &(_nc_prescreen._ESCDELAY))
+
+#define SET_LINES(value) *_nc_ptr_Lines(SP_PARM) = value
+#define SET_COLS(value) *_nc_ptr_Cols(SP_PARM) = value
+#define SET_TABSIZE(value) *_nc_ptr_Tabsize(SP_PARM) = value
+#define SET_ESCDELAY(value) *_nc_ptr_Escdelay(SP_PARM) = value
+