Richard Suchenwirth 2006-02-15 - "Hot patch" is in my understanding a technology where you can modify software while it's loaded in memory. In old BASIC days, one would POKE a byte into an address, and hopefully get the desired effect :-) In Tcl, the most straightforward way is to redefine a proc so that in addition to its old body, it gets the changes as wanted. Examples on this Wiki:
Overloading widgets might also fall into this category...