User Interface Location: Text Formatting > Links > Link

Watch this video to learn more about opening a linked worksheet to an internal link region in PTC Mathcad Prime 10.0.0.0:

The internal link functionality that was added in PTC Mathcad Prime 9.0.0.0 has been enhanced in PTC Mathcad Prime 10.0.0.0 to enable users to add the internal link identifier to the end of a hyperlink to an external PTC Mathcad Prime worksheet. The internal link is added in a #tag form. When you click the link and the external worksheet opens, it instantly scrolls the worksheet to display the target region.