I'm having trouble formulating a regular expression in a search (in Word VBA) to look for either an opening tag or a closing tag. I can get it to work for one or other but not both.

I want it to be able to find the following tags in a document:

<field: 1>
<field: 2>
<field: 143>
<field: n>
</field: 1>
</field: 2>
</field: 143>
</field: n>

It's the 'zero or one occurence of /' that's got me stuck.