If you press menu button( etc)/shortcut menu of Entire Tags or press the button at String Tags screen or press the string tag graphic object by using mouse left button, string tag value change dialog box is shown such as <Figure 1>.
<Figure 1> Example for change string dialog box of string tags
You can change current value of string by pressing button after entering string to change to editing area of <Figure 1>.
String tag's tag description, tag name and etc are set at Tag Properties dialog box or Tag Editor.
Relate items)
Graphic Object Related to String
Modifying the Tag Properties(ST tab)