<a href="http://www.opengl.org/registry/specs/SGI/cushion.txt">SGI_cushion</a></td></tr>
<tr><td class="num">44</td><td>&nbsp;</td><td><a href="http://www.opengl.org/registry/specs/SGI/make_current_read.txt">SGI_make_current_read</a></td></tr>
<tr><td class="num">45</td><td>&nbsp;</td><td><a href="http://www.opengl.org/registry/specs/SGI/swap_control.txt">SGI_swap_control</a></td></tr>
<tr><td class="num">46</td><td>&nbsp;</td><td><a href="http://www.opengl.org/registry/specs/SGI/video_sync.txt">SGI_vide