rem: whichMarker(Ruler *rPtr, int x, int y)
add: static int whichMarker(Ruler * rPtr, int x, int y)
context: whichMarker(Ruler *rPtr, int x, int y){    if(x<rPtr->offset || y>22)        return 0;    if( rPtr->margins.left-x >= -6 && y <= 9        && (rPtr->margins.left-x <=0) && y>=4) {        rPtr->motion = rPtr->margins.left;        return 1;    }    if(rPtr->margins.right-x >= -1 && y <= 11       && rPtr->margins.right-x <=5  && y>=4) {        rPtr->motion = rPtr->margins.right;        return 2;    }#if 0    /* both first and body? */    if( rPtr->margins.first-x <= 4 && rPtr->margins.first-x >= -5        && rPtr->margins.body-x <= 4 && rPtr->margins.body-x >= -5        && y>=15 && y<=17)  {        rPtr->motion = rPtr->margins.first;        return 6;    }#endif    if(rPtr->margins.first-x <= 4   && y<=15       && rPtr->margins.first-x >= -5  && y>=10) {        rPtr->motion = rPtr->margins.first;        return 3;    }    if( rPtr->margins.body-x <= 4 &&  y<=21  &&        rPtr->margins.body-x >= -5  && y>=17) {        rPtr->motion = rPtr->margins.body;        return 4;    }    /* do tabs (5)*/    return 0;}