-// mode = 0 Delete arrays of both signal values and their errors.
-// 1 Delete only signal values array
-// 2 Delete only signal errors array
+// mode = 0 Delete arrays of signal values, their errors and all waveform histos.
+// 1 Delete only signal values array and waveform histos.
+// 2 Delete only signal errors array and waveform histos.
+// -1 Delete only signal values array.
+// -2 Delete only signal errors array.