<table style="border: 1px solid rgb(170, 170, 170); margin: 1em 1em 1em 0pt; background: rgb(249, 249, 249) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; border-collapse: collapse;" border="2" cellpadding="4" cellspacing="0"><tbody><tr><td>double quad space</td> <td>a \qquad b</td> <td>
</td> </tr> <tr> <td>quad space</td> <td>a \quad b</td> <td>
</td> </tr> <tr> <td>text space</td> <td>a\ b</td> <td>
</td> </tr> <tr> <td>text space without PNG conversion</td> <td>a \mbox{ } b</td> <td>
a b</td> </tr> <tr> <td>large space</td> <td>a\;b</td> <td>
</td> </tr> <tr> <td>medium space</td> <td>a\>b</td> <td>[not supported]</td> </tr> <tr> <td>small space</td> <td>a\,b</td> <td>
</td> </tr> <tr> <td>no space</td> <td>ab</td> <td>
</td> </tr> <tr> <td>small negative space</td> <td>a\!b</td> <td>
</td></tr></tbody></table>