Capabilities of a TCL script in Cisco IOS

So I just came across this in the lab manual for CCNP ROUTE and curious to what can I do with this that would be useful aside from simultaneously pinging/tracert/ssh multiple devices?

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TCL is a IOS scripting language. It has the capability to do much much more but for the SLM it is introduced to provide a way to run multiple pings, etc.

Here is some more background info on it:

Cisco IOS Scripting with TCL Configuration Guide, Cisco IOS Release 12.4T - Cisco IOS Scripting with Tcl [Support] - Cisco

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