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The Org Mode 7 Reference Manual
by Carsten Dominik and others
Paperback (6"x9"), 282 pages
ISBN 9781906966089
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14.8.2.16 :eval

The :eval header argument can be used to limit the evaluation of specific code blocks. :eval accepts two arguments “never” and “query”. :eval never will ensure that a code block is never evaluated, this can be useful for protecting against the evaluation of dangerous code blocks. :eval query will require a query for every execution of a code block regardless of the value of the org-confirm-babel-evaluate variable.

ISBN 9781906966089The Org Mode 7 Reference ManualSee the print edition