Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/cups/templates/edit-config.tmpl

 <SCRIPT TYPE="text/javascript">
function reset_config()
{
  document.cups.CUPSDCONF.value = "{?cupsdconf_default}";
}
</SCRIPT>

<H2 CLASS="title">Edit Configuration File</H2>

<FORM NAME="cups" METHOD="POST" ACTION="/admin/">
<INPUT TYPE="HIDDEN" NAME="org.cups.sid" VALUE="{$org.cups.sid}">
<INPUT TYPE="HIDDEN" NAME="OP" VALUE="config-server">

<TEXTAREA NAME="CUPSDCONF" COLS="80" ROWS="25">{CUPSDCONF}</TEXTAREA>

<P><INPUT TYPE="SUBMIT" NAME="SAVECHANGES" VALUE="Save Changes">
<INPUT TYPE="BUTTON" VALUE="Use Default Configuration File"
onClick="reset_config();"></P>

</FORM>