Histogram::usage = "Histogram[Data_?VectorQ,Bins_MatrixQ,BinLabels_List:{},ShowLabels_:True] produces a histogram of Data, using Bins to group the data. Bins is a list of data pairs, listing the minimum and maximum values for each bin. BinLabels is an optional list of strings or expressions to use as labels below the bars. If the bar widths are too small to have labels, set the optional parameter ShowLabels to False. The bin widths need not be equal. The area of the bar corresponds to the percentage of data in the bin (the height of the bar may not show the percentage). Very little validity checking is done on the bins.