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1.1     ! root        1: .so tmac.ilib
        !             2: .TH I-XREF 1 "The University of Arizona \- 6/28/83
        !             3: .SH NAME
        !             4: i-xref \- Icon program cross reference
        !             5: .SH SYNOPSIS
        !             6: \f3i-xref\fP [file] [options]
        !             7: .SH DESCRIPTION
        !             8: \fII-xref\fP provides a cross-reference facility for Icon programs. It lists
        !             9: the occurrences of each variable by line number. Variables are listed
        !            10: by procedure or separately as globals.
        !            11: The options specify the formatting of the
        !            12: output and whether or not to cross-reference quoted strings and
        !            13: non-alphanumerics. Variables that are followed by a left parenthesis
        !            14: are listed with an asterisk following the name.
        !            15: If a file is not specified, then standard input is cross-referenced.
        !            16: .PP
        !            17: The following options change the format defaults. They may appear in any order:
        !            18: .IP "\f3\-c\fP \fIn\fP" 0.75i
        !            19: The column width per line number. The default is 4 columns wide.
        !            20: .IP "\f3\-l\fP \fIn\fP"
        !            21: The starting column (i.e. left margin) of the line numbers.
        !            22: The default is column 40.
        !            23: .IP "\f3\-w\fP \fIn\fP"
        !            24: The column width of the whole output line. The default is 80 columns wide.
        !            25: .PP
        !            26: Normally only alphanumerics are cross-referenced. These options expand
        !            27: what is considered:
        !            28: .IP \f3\-q\fP 0.75i
        !            29: Include quoted strings.
        !            30: .IP \f3\-x\fP
        !            31: Include all non-alphanumerics.
        !            32: 
        !            33: .SH LIMITATION
        !            34: This program assumes the subject file is a valid Icon program. For example,
        !            35: quotes are expected to be matched.
        !            36: .SH AUTHOR
        !            37: Allan J. Anderson

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