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Test Your Knowledge in Computers #502
Difficulty: Medium
If a function uses a particular process or algorithm such as a Fast Fourier Transform to perform an operation, it would not be appropriate to document it in a series of comments in the source code.
True or False?
Linux & Unix Commands - Search Man Pages

refer(1) [bsd man page]

REFER(1)						      General Commands Manual							  REFER(1)

NAME
refer - find and insert literature references in documents SYNOPSIS
refer [ -a ] [ -b ] [ -c ] [ -e ] [ -fn ] [ -kx ] [ -lm,n ] [ -n ] [ -p bib ] [ -skeys ] [ -Bl.m ] [ -P ] [ -S ] [ file ... ] DESCRIPTION
Refer is a preprocessor for nroff or troff(1) that finds and formats references for footnotes or endnotes. It is also the base for a series of programs designed to index, search, sort, and print stand-alone bibliographies, or other data entered in the appropriate form. Given an incomplete citation with sufficiently precise keywords, refer will search a bibliographic database for references containing these keywords anywhere in the title, author, journal, etc. The input file (or standard input) is copied to standard output, except for lines between .[ and .] delimiters, which are assumed to contain keywords, and are replaced by information from the bibliographic database. The user may also search different databases, override particular fields, or add new fields. The reference data, from whatever source, are assigned to a set of troff strings. Macro packages such as ms(7) print the finished reference text from these strings. By default refer- ences are flagged by footnote numbers. The following options are available: -an Reverse the first n author names (Jones, J. A. instead of J. A. Jones). If n is omitted all author names are reversed. -b Bare mode: do not put any flags in text (neither numbers nor labels). -ckeys Capitalize (with CAPS SMALL CAPS) the fields whose key-letters are in keys. -e Instead of leaving the references where encountered, accumulate them until a sequence of the form .[ $LIST$ .] is encountered, and then write out all references collected so far. Collapse references to same source. -fn Set the footnote number to n instead of the default of 1 (one). With labels rather than numbers, this flag is a no-op. -kx Instead of numbering references, use labels as specified in a reference data line beginning %x; by default x is L. -lm,n Instead of numbering references, use labels made from the senior author's last name and the year of publication. Only the first m letters of the last name and the last n digits of the date are used. If either m or n is omitted the entire name or date respec- tively is used. -n Do not search the default file /usr/dict/papers/Ind. If there is a REFER environment variable, the specified file will be searched instead of the default file; in this case the -n flag has no effect. -p bib Take the next argument bib as a file of references to be searched. The default file is searched last. -skeys Sort references by fields whose key-letters are in the keys string; permute reference numbers in text accordingly. Implies -e. The key-letters in keys may be followed by a number to indicate how many such fields are used, with + taken as a very large number. The default is AD which sorts on the senior author and then date; to sort, for example, on all authors and then title, use -sA+T. -Bl.m Bibliography mode. Take a file composed of records separated by blank lines, and turn them into troff input. Label l will be turned into the macro .m with l defaulting to %X and .m defaulting to .AP (annotation paragraph). -P Place punctuation marks .,:;?! after the reference signal, rather than before. (Periods and commas used to be done with strings.) -S Produce references in the Natural or Social Science format. To use your own references, put them in the format described below. They can be searched more rapidly by running indxbib(1) on them before using refer; failure to index results in a linear search. When refer is used with the eqn, neqn or tbl preprocessors refer should be first, to minimize the volume of data passed through pipes. The refer preprocessor and associated programs expect input from a file of references composed of records separated by blank lines. A record is a set of lines (fields), each containing one kind of information. Fields start on a line beginning with a ``%'', followed by a key-letter, then a blank, and finally the contents of the field, and continue until the next line starting with ``%''. The output ordering and formatting of fields is controlled by the macros specified for nroff/troff (for footnotes and endnotes) or roffbib (for stand-alone bibliographies). For a list of the most common key-letters and their corresponding fields, see addbib(1). An example of a refer entry is given below. EXAMPLE
%A M. E. Lesk %T Some Applications of Inverted Indexes on the UNIX System %B UNIX Programmer's Manual %V 2b %I Bell Laboratories %C Murray Hill, NJ %D 1978 FILES
/usr/dict/papers directory of default publication lists /usr/libexec/refer directory of companion programs SEE ALSO
addbib(1), sortbib(1), roffbib(1), indxbib(1), lookbib(1) AUTHOR
Mike Lesk BUGS
Blank spaces at the end of lines in bibliography fields will cause the records to sort and reverse incorrectly. Sorting large numbers of references causes a core dump. 7th Edition October 22, 1996 REFER(1)

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