Server Administration > Automate Tasks and Calculate Data Using Event Triggers > Coding Workflow and Document Triggers > Script Parameters > Field Parameters
 
Field Parameters
To get a list of types, use @param Type:
// @param Type New Type
To get a list of states, use @param State:
// @param State New State
To get a list of fields, use @param Field:<field type>:
For example, to get a list of relationship fields type:
// @param Field:relationship New Relationship
This prevents introducing typographical errors into trigger parameters and having to look up type, state, and field names. The syntax for all field types is the field type name (all lowercase and no spaces), for example, Long Text is “longtext”.