altiumpcbpcb-designpcb-fabrication
I know mouse bites are more used to snap off one of many of the same boards in a panelized array, but I'm hoping to put mouse bites to snap off part of the same board if that's possible.
Is there just a standard for how far apart you put centers of drill holes? Is there a standard diameter for the holes?
V-groove could work as well.
Take a look at www.tag-connect.com. They supply programming cables that mate to a small board pad layout. Include the layout on your board and your all set.
You can do this without a schematic. Open PcbNew and click on 
at the right hand side. This will allow you to add any footprint, such as a 1x1 pin header. Make sure your grid is 100 mil. As a proof of concept, I used the 1x5 pin headers 
.
Best Answer
I had one project with an L shaped board. The PC assembly house wanted me to keep the inner corner of the board in place so that it was better supported by the rails through the pick and place machine. So I used mouse bites to connect the two sections together but to later have that inner corner removed when the boards went to functional testing.
Here is a picture showing the board (red outline) and the breakaway inner corner (green outline).
Here is the detail of the mouse bite design from the board fabrication drawing.
Notice that the breakaways are used in conjunction with routing that is performed using a cutter bit that is 100 mils in diameter.