ctionality in the Tcl
environment that users are used to in native environments. There
are also some redefined procedures. Here is a non-comprehensive
list:</p>

<dl compact>
<dt><b>alias</b> <i>?sourceCmd targetCmd ?arg arg ...??</i></dt>

<dd>Simple alias mechanism. It will overwrite existing commands.
When called without args, it returns current aliases. Note that
TkCon makes some aliases for you (in slaves). <font color=
"#FF0000">Don't delete those</font>.</dd>

<dt><b>clear</b> <i>?percentage?</i></dt