(539 Kb) -
This form is used by nonimmigrants to request an extension of their stay or to change to a different nonimmigrant status (e.g., from an F-1 student to an H-4 dependent).
If you are referring to a article or a document related to U.S. immigration, it likely pertains to Form I-539 , Application to Extend/Change Nonimmigrant Status . (539 KB)
In a technical sense, refers to a specific file size. This form is used by nonimmigrants to request
Filing costs vary. Online filing is typically $420 , while paper filing is $470 (which includes a biometric services fee). it likely pertains to Form I-539