MetaInfo ports is a small package to allow visualizing the ports saved in a cell's LayoutMetaInfos.
After installation a Button with "Show Ports" or "Hide Ports" should appear in the toolbar.
To install MetaInfo Ports, open KLayout and open the package manger under Tools -> Manage Packages. In the package manager search for MetaInfo Ports,
double-click it, check that it has a green check mark on it and press Apply on the bottom left. When asked to run the initial script press
Yes in order to start klive.
As it's similar to how to install klive, the video is the same.