tbl(1)							      General Commands Manual							    tbl(1)

NAME

       tbl - format tables for nroff

SYNOPSIS

       [file ...]

DESCRIPTION

       is  a  preprocessor that formats tables for nroff(1).  The input files are copied to the standard output, except for lines between and com-
       mand lines, which are assumed to describe tables and are re-formatted by (The and command lines are not altered by

       is followed by global options.  The available global options are:

	      center the table (default is left-adjust);
	      make the table as wide as the current line length;
	      enclose the table in a box;
	      enclose the table in a double box;
	      enclose each item of the table in a box;
	      use the character
			x instead of a tab to separate items in a line of input data.

       The global options, if any, are terminated with a semi-colon

       Next come lines describing the format of each line of the table.  Each such format line describes one line of the actual table, except that
       the  last  format line (which must end with a period) describes all remaining lines of the table.  Each column of each line of the table is
       described by a single key-letter, optionally followed by specifiers that determine the font and point size of the corresponding item, indi-
       cate  where  vertical  bars are to appear between columns, or determine column width, inter-column spacing, etc.  The available key-letters
       are:
	      center item within the column;
	      right-adjust item within the column;
	      left-adjust item within the column;
	      numerically adjust item in the column:
		     units positions of numbers are aligned vertically;
	      span previous item on the left into this column;
	      center longest line in this column,
		     then left-adjust all other lines in this column with respect to that centered line;
	      span down previous entry in this column;
	      replace this entry with a horizontal line;
	      replace this entry with a double horizontal line.

       The characters and stand for the bold (font position 3) and italic (font position 2) fonts, respectively; the character indicates a  verti-
       cal line between columns.

       The format lines are followed by lines containing the actual data for the table, followed finally by Within such data lines, data items are
       normally separated by tab characters.

       If a data line consists of only or a single or double line, respectively, is drawn across the table at that point; if a single  item  in  a
       data line consists of only or then that item is replaced by a single or double line.

       The option forces to use only full vertical line motions, making the output more suitable for devices that cannot generate partial vertical
       line motions (such as line printers).

       If no file names are given as arguments (or if is specified as the last argument), reads the standard input, and thus can be used as a fil-
       ter.  When used with should be used first to minimize the volume of data passed through pipes (see neqn(1)).

EXTERNAL INFLUENCES

   Environment Variables
       determines the interpretation of text as single- and/or multi-byte characters.

       determines the radix character used in numerical data.

       determines the language in which messages are displayed.

       If  or  is  not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty
       variable.  If

	      is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization  vari-
	      able contains an invalid setting, behaves as if all internationalization variables are set to "C".  See environ(5).

   International Code Set Support
       Single- and multi-byte character code sets are supported.

EXAMPLES

       If we redefine the tab character to a semicolon, then the input:

       yields:

							     +------------------------------+
							     |	  Household Population	    |
							     +--------------+---------------+
							     |	  Town	    |  Households   |
							     |		    | Number   Size |
							     +--------------+---------------+
							     |Bedminster    |	789    3.26 |
							     |Bernards Twp. |  3087    3.74 |
							     |Bernardsville |  2018    3.30 |
							     |Bound Brook   |  3425    3.04 |
							     |Bridgewater   |  7897    3.81 |
							     |Far Hills     |	240    3.19 |
							     +--------------+---------------+
       The command is used most often with and (see col(1)).  A common usage is:

WARNINGS

       See WARNINGS under nroff(1).

SEE ALSO

       col(1), mm(1), neqn(1), nroff(1), soelim(1), mm(5).

																	    tbl(1)