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'\"
'\" Copyright (c) 1993 The Regents of the University of California.
'\" Copyright (c) 1994-1997 Sun Microsystems, Inc.
'\" Copyright (c) 1993-1997 Bell Labs Innovations for Lucent Technologies
'\" Copyright (c) 1998-2000 Ajuba Solutions
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" RCS: @(#) $Id: info.n,v 1.14 2004/10/27 14:24:37 dkf Exp $
'\"
.so man.macros
.TH info n 8.4 Tcl "Tcl Built-In Commands"
.BS
'\" Note: do not modify the .SH NAME line immediately below!
.SH NAME
info \- Return information about the state of the Tcl interpreter
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'\"
'\" Copyright (c) 1993 The Regents of the University of California.
'\" Copyright (c) 1994-1997 Sun Microsystems, Inc.
'\" Copyright (c) 1993-1997 Bell Labs Innovations for Lucent Technologies
'\" Copyright (c) 1998-2000 Ajuba Solutions
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" RCS: @(#) $Id: info.n,v 1.15 2005/04/06 20:55:22 dkf Exp $
'\"
.so man.macros
.TH info n 8.4 Tcl "Tcl Built-In Commands"
.BS
'\" Note: do not modify the .SH NAME line immediately below!
.SH NAME
info \- Return information about the state of the Tcl interpreter
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Otherwise it returns \fB1\fR and places the default value of \fIarg\fR
into variable \fIvarname\fR.
.TP
\fBinfo exists \fIvarName\fR
Returns \fB1\fR if the variable named \fIvarName\fR exists in the
current context (either as a global or local variable) and has been
defined by being given a value, returns \fB0\fR otherwise.
.VS 8.4
.VE
.VS
.VE
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Otherwise it returns \fB1\fR and places the default value of \fIarg\fR
into variable \fIvarname\fR.
.TP
\fBinfo exists \fIvarName\fR
Returns \fB1\fR if the variable named \fIvarName\fR exists in the
current context (either as a global or local variable) and has been
defined by being given a value, returns \fB0\fR otherwise.
.TP
\fBinfo functions \fR?\fIpattern\fR?
If \fIpattern\fR isn't specified, returns a list of all the math
functions currently defined.
If \fIpattern\fR is specified, only those functions whose name matches
\fIpattern\fR are returned. Matching is determined using the same
rules as for \fBstring match\fR.
.TP
\fBinfo globals \fR?\fIpattern\fR?
If \fIpattern\fR isn't specified, returns a list of all the names
of currently-defined global variables.
Global variables are variables in the global namespace.
If \fIpattern\fR is specified, only those names matching \fIpattern\fR
are returned. Matching is determined using the same rules as for
\fBstring match\fR.
.TP
\fBinfo hostname\fR
Returns the name of the computer on which this invocation is being
executed.
Note that this name is not guaranteed to be the fully qualified domain
name of the host. Where machines have several different names (as is
common on systems with both TCP/IP (DNS) and NetBIOS-based networking
installed,) it is the name that is suitable for TCP/IP networking that
is returned.
.TP
\fBinfo level\fR ?\fInumber\fR?
If \fInumber\fR is not specified, this command returns a number
giving the stack level of the invoking procedure, or 0 if the
command is invoked at top-level. If \fInumber\fR is specified,
then the result is a list consisting of the name and arguments for the
procedure call at level \fInumber\fR on the stack. If \fInumber\fR
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