$eval

Returns the string N times evaluated.

 $eval(string,N)

If N isn't specified, N is set to 1.

Example:

 var %var = m00
 var %string = % $+ var

Now echoing %var would echo "m00" and echoing %string would echo "%var"

 echo -a $eval(%string,0)

This would echo "%string" since %string is not evaluated.

 echo -a $eval(%string,1)

This would echo "%var" since %string is evaluated once. Notice that this is the same as echoing %string

 echo -a $eval(%string,2)

This would echo "m00" since the string is first evaluated to %var and %var is then evaluated to m00