Clarify interplay of spacing and per_column in info
@@ -54,9 +54,11 @@ def info(table, **kwargs):
Report the min/max values per column in separate columns.
spacing : str
[**b**\|\ **p**\|\ **f**\|\ **s**]\ *dx*\[/*dy*\[/*dz*...]].
- Report the min/max of the first n columns to the nearest multiple of
- the provided increments and output results in the form
- ``[w, e, s, n]``.
+ Compute the min/max values of the first n columns to the nearest
+ multiple of the provided increments [default is 2 columns]. By default,
+ output results in the form ``[w, e, s, n]``, unless ``per_column`` is
+ set in which case we output each min and max value in separate output
+ columns.
nearest_multiple : str
**dz**\[\ **+c**\ *col*].
Report the min/max of the first (0'th) column to the nearest multiple
