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<HTML>
<HEAD>
<TITLE>ALIAS command</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<P><font size="+3" color="green"><B>ALIAS command</B></font></P>
<TABLE border="1" cols="2" frame="box" rules="all" width="590">
<TR>
<TD width="15%" valign="top"><B>Syntax</B>:</TD>
<TD width="85%" valign="top"><CODE>
ALIAS<br />
ALIAS name<br />
ALIAS name value<br />
ALIAS\EXPAND name value</CODE>
</TD></TR>
<TR>
<TD width="15%" valign="top"><B>Qualifiers</B>:</TD>
<TD width="85%" valign="top"><CODE>\EXPAND</CODE></TD></TR>
<TR>
<TD width="15%" valign="top"><B>Defaults</B>:</TD>
<TD width="85%" valign="top"><CODE>\-EXPAND</CODE></TD></TR>
<TR>
<TD width="15%" valign="top"><B>Examples</B>:</TD>
<TD width="85%" valign="top"><CODE>ALIAS XRED SET XAXISCOLOR RED</TD></TR>
</TABLE>
<P>
The <CODE>ALIAS</CODE> command allows the user to create
new commands by equating a keyword to a command string. The command string must begin
with a valid command. For example, it cannot be a file name that is to be used with
other commands (use a character variable for that).</p>
<p>
If the <CODE>ALIAS</CODE> command is entered with no parameters, all
the current aliases will be displayed. If the <CODE>ALIAS</CODE>
command is entered with one parameter, the parameter is assumed to be an alias name, and
the command string associated with that name will be displayed. If a
<CODE>name</code> and a <CODE>value</code>
are entered, and if <CODE>name</code> already exists as an alias,
the command string value will be updated to the new <CODE>value</code>.
If <CODE>name</code> does not exist, a new alias will be created.</p>
<p>
Use the
<CODE><a href="../DealiasCommand/dealiascommand.htm">DEALIAS</a></font></CODE>
command to eliminate an alias.</p>
<p>
If the <CODE>\EXPAND</CODE> qualifier is used, and if the second
parameter is a character variable (or character expression), then the value of the
variable (or of the expression) will become the command string. This allows you
to construct commands in a script and alias them to single word commands. For example:
<font color="blue"><pre>
TT = 'GRAPH X '
VECTOR V 1
INQUIRE 'Enter a vector >>' V
ALIAS\EXPAND PLOT TT//VARNAME(V)
</pre></font>
and you can then just enter the new command <CODE>PLOT</code> to draw the graph.</p>
</BODY>
</HTML>
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