link grand_challenge to oauth--><path d="M447.11,610.2031 C441.1,620.1631 435.09,630.2631 429.5,639.9531 C418.86,658.3731 407.68,678.7631 397.84,697.0931 " fill="none" id="grand_challenge->oauth" style="stroke: #666666; stroke-width: 1.0;"/><polygon fill="#666666" points="395.37,701.7031,403.1459,695.6587,397.7311,697.2957,396.0941,691.8809,395.37,701.7031" style="stroke: #666666; stroke-width: 1.0;"/><text fill="#666666" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="147" x="430.5" y="653.02">Authenticates users</text><text fill="#666666" font-family="sans-serif" font-size="13" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="55" x="476.5" y="668.1528">against</text><!--MD5=[2b9db60d896ec02fd51e20cd7cade9e7]