|pprint-indent relative-to n &optional stream||[Function]|
Specify the indentation to use in the current logical block if stream, which defaults to *standard-output*, is a pretty-printing stream and *print-pretty* is true, otherwise do nothing. See pprint-logical-block. n is the indention to use, in ems, the width of an ``m'', and relative-to can be either:
- Indent relative to the column the current logical blockstarted on.
- Indent relative to the current column.
The new indention value does not take effect until the following line break.