|  | ANSI Common Lisp  22 Printer  22.4 Dictionary of Printer 
 
| 22.4.10  pprint-tab | Function |  
 
 Syntax:
pprint-tab
kind colnum colinc &optional stream
   nil 
 
Arguments and Values:
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.
 
Description:
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).
 
Exceptional Situations:
An error is signaled if kind is not one of :line,
:section, :line-relative, or :section-relative.
See Also:
pprint-logical-block
 
Allegro CL Implementation Details:
 None. |