> Licensing ScreenFlow
> If ScreenFlow is not currently licensed, the Licenses pane displays the buttons as depicted in the figure below (Figure 81).
> Figure 81. Preferences Licenses Pane (Unlicensed)
> These preferences are described in Table 27.

> Table 27. Preferences License Options
> Button | Description
> Purchase License | Click to purchase a ScreenFlow license from the Telestream Web site. The license is automatically installed upon completion of your purchase.
> Enter Serial Number | Click to enter a serial number which has already been issued. This field is case sensitive. All letters must be capitalized and hyphens must be included.
> Deactivate Serial Number | When ScreenFlow is unlicensed, this option is disabled.