Question: How can I export a specific page in Wordpress?

I want to use a page from one wordpress instance in another wordpress instance, both having same theme.

How can I do this?

Answer: 
In case someone still stumbles upon this question: I found [this](https://wordpress.org/plugins/single-post-exporter/) plugin, which works like a charm for me. Just watch out for images and other content that might not be exported with the xml file. After you export the page you can go to Tools > Import Data and import the xml file.
If you want to copy pages or sites in between a multisite installation, try the plugin NS Cloner in free version:

1. Install plugin "NS Cloner"
2. My Sites -> Network Admin -> Sites and put mouse over your sit
3. Clone

→ an full copy of a site with all pages is made - in my case it was perfect identical