Writes text to a file previously opened with the USFile.Open method in WRITE or APPEND mode.
The required and case-insensitive alias is the alias of the file to be closed. This alias must previously have been assigned to a file when the USFile.Open method was called. Alias is a regular name string that may or may not use the 'USFile.' prefix.
Value is a regular text string that may or may not contain whitespace.
•If USFile.Open was called in APPEND mode, value is appended to the existing contents of the file (if any).
•If USFile.Open was called in WRITE mode, value replaces the existing contents of the file (if any).