/* modifier key function argument */
{ MODKEY|ShiftMask, XK_Prior, xzoom, {.i = +1} },
{ MODKEY|ShiftMask, XK_Next, xzoom, {.i = -1} },
/* modifier key function argument */
{ MODKEY|ShiftMask, XK_Prior, xzoom, {.i = +1} },
{ MODKEY|ShiftMask, XK_Next, xzoom, {.i = -1} },