The function I am trying to perform by voice would snap a vertice or an edge which has been previously selected to the one that is selected next. If I could hold the middle mouse button and the “v” key for a certain time period and then, using the mouse with my hand, pressing no buttons there, only wiggling over the newly selected vertice or edge, the previously selected vertice would snap over to the new location! Another important part of this command would be to somehow add a “middle mouse up” event to end the command, but I haven’t gotten there yet.
In Yosemite I have enabled Enhanced Dictation. Then, in “Accessibility,” I have highlighted “Dictation" and then clicked “Dictation Commands…" I have named my new voice command “V Snap.” I assume that neither the “v” key, nor the middle mouse button are functions that I can add to a new Dictation Command in Accessibility because in pull down menu for “Keyboard Shortcut…” the only keys I can enter here are F keys and those of the extended keyboard, and pressing the middle mouse button only seems to perform the function of returning this pulldown menu to “choose…”