### Howto replace a stuck transaction with another with higher fee ?

bitcoind 0.15.0

The marking option "Request Replace-By-Fee" in the sending transaction GUI page should have a better understandable text.

The sender does not "request" anything when creating the transaction. This is just a tag for a later possibility, as I understand as a rather normal user.

I would suggest something like

"Let me increase the fee of this transaction later, if it should not get confirmed in expected time ('Replace-By-Fee' feature)"
}
            else 
            {
                ui->labelCoinControlChangeLabel->setStyleSheet("QLabel{color:black;}");
                
                QString associatedLabel = model->getAddressTableModel()->labelForAddress(text);
                if (!associatedLabel.isEmpty())
                    ui->labelCoinControlChangeLabel->setText(associatedLabel);
                else
                    ui->labelCoinControlChangeLabel->setText(tr("(no label)"));
                CoinControlDialog::coinControl->destChange = dest;
            }
        }
    }
}
void SendCoinsDialog::coinControlUpdateLabels()
{
    if (!model || !model->getOptionsModel())
        return;
    updateCoinControlState(*CoinControlDialog::coinControl);
    
    CoinControlDialog::payAmounts.clear();
    CoinControlDialog::fSubtractFeeFromAmount = false;
    for(int i = 0; i < ui->entries->count(); ++i)
    {
        SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
        if(entry && !entry->isHidden())
        {
            SendCoinsRecipient rcp = entry->getValue();
            CoinControlDialog::payAmounts.append(rcp.amount);