Gabe link picker is one of the coolest add-ons available for Umbraco 7. By installing it, you will have the option to select a link from inside your Umbraco project, or write the URL your self for an external link/mailto. You can read more about downloading/ using it from here.
However, one might want to use the link picker as macro parameter. To do so,go to your solution-> app_plugins>GabeLinkPicker>package.manifest
and then add isParameterEditor: true to the property editor. It should look like this:
Now if you open a macro type(or create one) and go to parameters tab, link picker will be one of your options as the parameter type.
