Untie the specified parameter from any links to other parameters.
Syntax: untie <param range>
where <param range> is of the form
<param range> =:: [modelName:]<param #>
For response parameters (see gain command):
runtie <param range>
where <param range> is of the form
<param range> =:: [sourceNum:]<param #>
Parameters previously linked together with commands such as
XSPEC12> newpar <param spec>
are unlinked. The parameter will retain its current value for the next fit.