REBOL 3 Docs Guide Concepts Functions Datatypes Errors
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REBOL 3 Errors: not-open

An attempt was made to use a port that was closed.

Message:

["Port" :arg1 "not open"]

Example:

p: open %file.txt
close p
filter-error try [copy p]
** Access Error: Port file.txt not open
** Where: copy p


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