LegendBorderSpace is an option for Legend which sets the space around the entire set of key boxes and text in the legend.
LegendLabelSpace is an option for Legend, which specifies the space for LegendLabel.
LegendSpacing is an option for Legend which specifies the amount of space around each key box on a scale where the box is 1.
PlotLegend is an option for Plot, ListPlot, and related functions that assigns text to lines in a 2D plot to create a legend for that plot.
ShadowBox[{x, y}, {xlength, ylength}, options] generates a box with a drop shadow.
ShadowOffset is an option for ShadowBox, which sets the offset of a shadow from the rest of the box.
AtmosphericPlot[property] generates a plot of the specified property property as a function of geometric altitude.
ColumnLabels is an option for StemLeafPlot which specifies the labels for columns.
DataLabels is an option for PairwiseScatterPlot which specifies labels for each column of data.
PlotDirection is an option for PairwiseScatterPlot which specifies the direction in which scatter plots are generated.