You can use Presto global attributes or user attributes to fill in block properties for inputs to mashables or mashups. Global Presto attributes are meant to be used by any user. User Presto attributes have values that are specific to you or to the user running your mashup.

Your Presto administrator defines Presto global attributes for values that many or all users might need to use as input for a mashable or mashup. You define user attributes in your Presto profile. For example, Presto attributes can define the username or password to work with a mashable source or a key that is needed to allow Google maps to be used as a view for apps.

To use a Presto attribute in a block property, open the Path Selector list and select the attribute from the Global or User folder.