Deletes the contents of the specified field in the current record.
Clear [Select; <table::field>]
Select entire contents deletes the entire contents of a field. If you do not use Select entire contents, only the selected portion of the field's data is deleted.
Select Go to target field or click Specify to specify the field whose contents you want to delete.
This script step is also supported in web publishing and in a FileMaker Server scheduled script.
Originated in 
FileMaker Pro 6.0 or earlier
This script step removes the contents of the field without placing the contents on the Clipboard. If you want to cut and paste the field information, use the Cut script step. Use Undo immediately to restore the contents.
Note  In a web-published database, use a Commit Record/Request script step after a Clear script step to update the record in the browser window.
The following example clears the values in a repeating field with three repetitions.
Clear [Select, table::field[3]]
Clear [Select, table::field[2]]
Clear [Select, table::field]
Related topics 
Script steps reference (alphabetical list)
Script steps reference (category list)