Một số trường hợp phát hành hóa đơn không thành công
This opening paragraph should describe the feature that you are documenting. Explain how it is commonly used and what the benefits are. For example: The Widget Master email link allows you to easily send information about each widget to various departments within your company. Often, the feature that you are documenting can be best explained by walking the reader through step by step. Use screenshots to illustrate the steps where possible.