Table cells may be ‘Top’, ‘Centre’ or ‘Bottom’ aligned – the default is always ‘Top’. This property gives a vector of alignments, with one value for each column. If required it will be reshaped to match the number of columns.

nltValign 'top' 'centre'

Note that this property is only used by nltSpread as nltList never writes more than one line of data in each cell. You can abbreviate the settings to a single letter, but be sure to pass this argument as a vector of vectors:

nltValign ,¨'cbctcbc'       
nltSpread 3 7½(3 4½'fat cat') 'sat'

Vertical alignment can only be set for entire columns.