kind—one of :line, :section, :line-relative, or :section-relative.
colnum—a non-negative integer.
colinc—a non-negative integer.
stream—an output stream designator.
Specifies tabbing to stream as performed by the standard ‘~T’ format directive.
If stream is a pretty printing stream and
the value of *print-pretty* is true,
tabbing is performed;
otherwise, pprint-tab has no effect.
The arguments colnum and colinc correspond to the two parameters to ‘~T’ and are in terms of ems. The kind argument specifies the style of tabbing. It must be one of :line (tab as by ‘~T’), :section (tab as by ‘~:T’, but measuring horizontal positions relative to the start of the dynamically enclosing section), :line-relative (tab as by ‘~@T’), or :section-relative (tab as by ‘~:@T’, but measuring horizontal positions relative to the start of the dynamically enclosing section).
An error is signaled if kind is not one of :line, :section, :line-relative, or :section-relative.