Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
DOS API
Table title:
Interrupt vectors used by DOS
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Interrupt vector </th><th colspan=1 rowspan=1 > Description </th><th colspan=1 rowspan=1 > Version </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 20h </td><td colspan=1 rowspan=1 > Terminate program </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Implemented in DOS kernel </td></tr>
<tr> <td colspan=1 rowspan=1 > 21h </td><td colspan=1 rowspan=1 > Main DOS API </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Implemented in DOS kernel </td></tr>
<tr> <td colspan=1 rowspan=1 > 22h </td><td colspan=1 rowspan=1 > Program terminate address </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Return address in calling program </td></tr>
<tr> <td colspan=1 rowspan=1 > 23h </td><td colspan=1 rowspan=1 > Control-C handler address </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Default handler is in the command shell (usually COMMAND.COM) </td></tr>
<tr> <td colspan=1 rowspan=1 > 24h </td><td colspan=1 rowspan=1 > Critical error handler address </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Default handler is in the command shell (usually COMMAND.COM) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 25h </td><td colspan=1 rowspan=1 > Absolute disk read </td><td colspan=1 rowspan=1 > 1.0+ </td><td class="highlighted"  colspan=1 rowspan=1 > Implemented in DOS kernel, enhanced in DOS 3.31 to support up to 2 GB partitions </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 26h </td><td colspan=1 rowspan=1 > Absolute disk write </td><td colspan=1 rowspan=1 > 1.0+ </td><td class="highlighted"  colspan=1 rowspan=1 > Implemented in DOS kernel, enhanced in DOS 3.31 to support up to 2 GB partitions </td></tr>
<tr> <td colspan=1 rowspan=1 > 27h </td><td colspan=1 rowspan=1 > Terminate and stay resident </td><td colspan=1 rowspan=1 > 1.0+ </td><td colspan=1 rowspan=1 > Implemented in COMMAND.COM in DOS 1.0, DOS kernel in DOS 2.0+ </td></tr>
<tr> <td colspan=1 rowspan=1 > 28h </td><td colspan=1 rowspan=1 > Idle callout </td><td colspan=1 rowspan=1 > 2.0+ </td><td colspan=1 rowspan=1 > Called by DOS kernel when waiting for input </td></tr>
<tr> <td colspan=1 rowspan=1 > 29h </td><td colspan=1 rowspan=1 > Fast console output </td><td colspan=1 rowspan=1 > 2.0+ </td><td colspan=1 rowspan=1 > Implemented by the builtin console device driver or a replacement driver like ANSI.SYS </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Ah </td><td colspan=1 rowspan=1 > Networking and critical section </td><td colspan=1 rowspan=1 > 3.0+ </td><td colspan=1 rowspan=1 > Called by DOS kernel to interface with networking software </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Bh </td><td colspan=1 rowspan=1 > Unused </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Ch </td><td colspan=1 rowspan=1 > Unused </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Dh </td><td colspan=1 rowspan=1 > Unused </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Eh </td><td colspan=1 rowspan=1 > Reload transient </td><td colspan=1 rowspan=1 > 2.0+ </td><td colspan=1 rowspan=1 > Implemented in COMMAND.COM </td></tr>
<tr> <td colspan=1 rowspan=1 > 2Fh </td><td colspan=1 rowspan=1 > Multiplex </td><td colspan=1 rowspan=1 > 3.0+ </td><td colspan=1 rowspan=1 > Implemented in DOS kernel and various programs (PRINT, MSCDEX, DOSKEY, APPEND, etc.) depending on subfunction number </td></tr>
</table>
Question:
What is enhanced in DOS 3.31?
Answer:
In DOS 3.31, the INT 25h/26h functions are enhanced.