These options enable you to customize preferences for opening calculation sheets.
To access the general Calculation module preferences, in the Preferences dialog box, in the tree view pane, click 
beside Calculation and then click General.
Tag creation — Select an option to determine whether users are allowed to create new instrument tags in the Calculation module.
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Allowed — Allows users to create new instrument tags in the Calculation module.
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Not allowed — Prohibits users from creatinMAximum Number of g new instrument tags in the Calculation module.
Maximum number of iterations for flowmeter calculations - Defines the maximum number of calculation iterations the calculator is allowed to perform.