update input file preamble comments for 2D histos

Plotting/input_final_dd_fig.txt

@@ -1,8 +1,8 @@
-#three sections: global options in OPTION, 1D histograms in HISTO, datasets in SET
+#three sections: global options in OPTION, 1D histograms in HISTO, 2D histograms in HISTO2D, datasets in SET
 #option format is: type:name[val] or vtype:name[val1,val2,...]
 #available types are (full/abbrev): bool/b, int/i, double/d, string/s, color/c
-#items on each line in the HISTO and SET sections must be tab-separated, with required items first, in order
-#HISTO: only required item is name (but without binning options afterward, it won't build properly)
+#items on each line in the HISTO, HISTO2D, and SET sections must be tab-separated, with required items first, in order
+#HISTO/HISTO2D: only required item is name (but without binning options afterward, it won't build properly)
 #SET: required items are type (stack, hist, base), subtype (data, mc, ext), name
 #for datasets, child-parent relationships are indicated by tab-indentation
 

Plotting/input_final_dd_shapesyst_datacard.txt

@@ -1,8 +1,8 @@
-#three sections: global options in OPTION, 1D histograms in HISTO, datasets in SET
+#three sections: global options in OPTION, 1D histograms in HISTO, 2D histograms in HISTO2D, datasets in SET
 #option format is: type:name[val] or vtype:name[val1,val2,...]
 #available types are (full/abbrev): bool/b, int/i, double/d, string/s, color/c
-#items on each line in the HISTO and SET sections must be tab-separated, with required items first, in order
-#HISTO: only required item is name (but without binning options afterward, it won't build properly)
+#items on each line in the HISTO, HISTO2D, and SET sections must be tab-separated, with required items first, in order
+#HISTO/HISTO2D: only required item is name (but without binning options afterward, it won't build properly)
 #SET: required items are type (stack, hist, base), subtype (data, mc, ext), name
 #for datasets, child-parent relationships are indicated by tab-indentation
 

Plotting/input_final_lqd321_dd_fig.txt

@@ -1,8 +1,8 @@
-#three sections: global options in OPTION, 1D histograms in HISTO, datasets in SET
+#three sections: global options in OPTION, 1D histograms in HISTO, 2D histograms in HISTO2D, datasets in SET
 #option format is: type:name[val] or vtype:name[val1,val2,...]
 #available types are (full/abbrev): bool/b, int/i, double/d, string/s, color/c
-#items on each line in the HISTO and SET sections must be tab-separated, with required items first, in order
-#HISTO: only required item is name (but without binning options afterward, it won't build properly)
+#items on each line in the HISTO, HISTO2D, and SET sections must be tab-separated, with required items first, in order
+#HISTO/HISTO2D: only required item is name (but without binning options afterward, it won't build properly)
 #SET: required items are type (stack, hist, base), subtype (data, mc, ext), name
 #for datasets, child-parent relationships are indicated by tab-indentation
 

Plotting/input_final_lqd321_dd_shapesyst_datacard.txt

@@ -1,8 +1,8 @@
-#three sections: global options in OPTION, 1D histograms in HISTO, datasets in SET
+#three sections: global options in OPTION, 1D histograms in HISTO, 2D histograms in HISTO2D, datasets in SET
 #option format is: type:name[val] or vtype:name[val1,val2,...]
 #available types are (full/abbrev): bool/b, int/i, double/d, string/s, color/c
-#items on each line in the HISTO and SET sections must be tab-separated, with required items first, in order
-#HISTO: only required item is name (but without binning options afterward, it won't build properly)
+#items on each line in the HISTO, HISTO2D, and SET sections must be tab-separated, with required items first, in order
+#HISTO/HISTO2D: only required item is name (but without binning options afterward, it won't build properly)
 #SET: required items are type (stack, hist, base), subtype (data, mc, ext), name
 #for datasets, child-parent relationships are indicated by tab-indentation