Delete <NextOrPrevious> Character

SCRIPT {
    if _arg1 = "Previous" then SendKeys "{Left}{Right}{Backspace}"
    if _arg1 = "Next"     then SendKeys "{Right}{Left}{Del}"
    if _arg1 = "Back"     then SendKeys "{Left}{Right}{Backspace}"
    if _arg1 = "Forward"  then SendKeys "{Right}{Left}{Del}"
    if _arg1 = "Last"     then SendKeys "{Left}{Right}{Backspace}"
}