buffer

ECO command. Buffer high fanout ECO nets
Usage: buffer($net_names, $buffer_name, $fanout);
$net_names: Net names to be buffered. Use "," to separate multiple nets, like "eco1_net1,reset2"
$buffer_name: The buffer module name from library, leave it blank to let the tool pick one.
              It supports repeater case by ",", for example, "INVX1,INVX16" would have 'INVX1'
              drives 'INVX16' and 'INVX16' drives the fanouts.
$fanout: How many fanout to insert a buffer.

Examples:

#1. For every 10 fanout of test_mode, add a buffer, BUFX6
buffer("test_mode", "BUFX6", 10); 

#2. For every 10 fanout of 'clock', add repeaters, INVX2,INVX16
buffer("clock", "INVX2,INVX16", 10);

#3. Let the tool pick a buffer
buffer("clock", "", 10);