I'm aware of the Wikipedia entry but I'm interested to know what this means in the context of the programmer.
Is it suggesting that you connect jump wires directly to a chip instead of using the socket on the programmer? If that's the case, then wouldn't *any chip supported by the programmer* allow for ICSP? What makes one supported while another is not supported? None of this is documented in these programmers so the whole support level and process to do this is cryptic and unclear.