How to call Keyword tests from another project script

You can't call something from another project directly, but you can put a pointer to it in the current project. Look at the "to add an existing project item from a file" section.  That header is wrong but the content is what you want. 

https://support.smartbear.com/testcomplete/docs/working-with/managing-projects/project-items/adding-and-removing.html

sonya_m could you point out that header to Support or someone else who could fix it?  It needs to be "to add an existing project item from another project"