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TBL(1)											   TBL(1)

       tbl - format tables for nroff or troff

       tbl [ file ...  ]

       Tbl  is	a  preprocessor for formatting tables for nroff or troff(1).  The input files are
       copied to the standard output, except for segments of the form

	      options ;
	      format .
	      format .
	      . . .

       which describe tables and are replaced by troff requests to lay out  the  tables.   If  no
       arguments are given, tbl reads the standard input.

       The (optional) options line is terminated by a semicolon and contains one or more of

	      center center the table; default is left-adjust

	      expand make table as wide as current line length


		     enclose the table in a box or double box

	      allbox enclose every item in a box

	      tab(x) use x to separate input items; default is tab

		     set rules in n-point type

		     recognize x and y as eqn(1) delimiters

       Each  line, except the last, of the obligatory format describes one row of the table.  The
       last line describes all rows until the next .T&, where the format changes, or the  end  of
       the  table  at .TE.  A format is specified by key letters, one per column, either upper or
       lower case:

	      Left justify: the default for columns without format keys.

	      Right justify.


	      Numeric: align at decimal point (inferred for integers) or at

	      Span: extend previous column across this one.

	      Alphabetic: left-aligned within column, widest item centered, indented relative  to
	      L rows.

	      Vertical span: continue item from previous row into this row.

	      Draw a horizontal rule in this column.

	      Draw a double horizontal rule in this column.

       Key letters may be followed by modifiers, also either case:

	      |      Draw vertical rule between columns.

	      ||     Draw a double vertical rule between columns.

	      n      Gap between column is n ens wide.	Default is 3.

	      Ffont  Use specified font.  B and I mean FB and FI.

	      T      Begin  vertically-spanned item at top row of range; default is vertical cen-
		     tering (with

	      Pn     Use point size n.

	      Vn     Use n-point vertical spacing in text block; signed n means relative change.

	      W(n)   Column width as a troff width specification.  Parens are optional if n is	a
		     simple integer.

	      E      Equalize the widths of all columns marked E.

       Each line of data becomes one row of the table; tabs separate items.  Lines beginning with
       are troff requests.  Certain special data items are recognized:

	      Draw a horizontal rule in this column.

	      Draw a double horizontal rule in this column.  A data line consisting of	a  single
	      or draws the rule across the whole table.

	      Draw a rule only as wide as the contents of the column.

	      Repeat character x across the column.

	      Span the previous item in this column down into this row.

	      The  item is a text block to be separately formatted by troff and placed in the ta-
	      ble.  The block continues to the next line beginning with T}.  The remainder of the
	      data line follows at that point.

       When  it  is used in a pipeline with eqn, the tbl command should be first, to minimize the
       volume of data passed through pipes.

       Let <tab> represent a tab (which should be typed as a genuine tab).
       c s s
       c c s
       c c c
       l n n.
       Household Population
       Bernards Twp.<tab>3087<tab>3.74

	   Household Population
	   Town 	Households
		       Number	Size
       Bedminster	 789	3.26
       Bernards Twp.	3087	3.74
       Bernardsville	2018	3.30


       troff(1), eqn(1), doctype(1)
       M. E. Lesk and L. L. Cherry, ``TBL--a Program to Format	Tables'',  Unix  Research  System
       Programmer's Manual, Tenth Edition, Volume 2.

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