[[CLOSE]] closes an open file or port using the number(s) assigned in an [[OPEN]] statement.


{{PageSyntax}}
: [[CLOSE]] [{{Parameter|fileNumber}}[, ...]]


{{PageParameters}}
* {{Parameter|fileNumber}} indicates the file or list of file numbers to close. When not specified, all open files are closed.


{{PageDescription}}
* A file must be closed when changing to another file mode.
* [[CLOSE]] files when they are no longer needed, in order to save memory.
* Files cannot be opened in the same [[OPEN]] mode using another number until the first one is closed.
* Use holding variables for each file number returned by [[FREEFILE]] so that the file reference is known.
* Will not return an error if a filenumber is already closed or was never opened. It does not verify that a file was closed.
* [[CLEAR]] can be used to close all open files.
* [[CLOSE]] can also be used to close an open TCP/IP connection using a handle returned by '''QB64'''.


{{PageSeeAlso}}
* [[OPEN]], [[OPEN COM]]
* [[_OPENCLIENT]], [[_OPENHOST]]
* [[_OPENCONNECTION]]
* [[_SNDCLOSE]]


{{PageNavigation}}
