proc getClipboardText(): string {....raises: [OSError, IOError], tags: [
    ExecIOEffect, ReadIOEffect, RootEffect], forbids: [].}

proc setClipboardText(text: string): bool {.
    ...raises: [OSError, IOError, ValueError],
    tags: [ExecIOEffect, ReadEnvEffect, RootEffect, WriteIOEffect, TimeEffect],
    forbids: [].}