Select a function

When you click the Functions button in the Expression editor, it opens the Functions dialog box, which lists all the functions available to the Expression editor.
To select a function for an expression:
  1. In the
    Expression Editor
     dialog box, click
    Functions
    .
  2. In the
    Functions
     dialog box, double-click the function required for the expression, or highlight it and click
    OK
    . The function is copied into the
    Expression Editor
     dialog box.
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