Import a script from the repository using a name-based path: 

<import resource="/Company Home/Data Dictionary/Scripts/library.js">

Import a script from the repository using a NodeRef reference: 

<import resource="workspace://SpacesStore/6f73de1b-d3b4-11db-80cb-112e6c2ea048">

Import a script from a Java classpath location: 

<import resource="classpath:alfresco/extension/myutils.js">