You are tasked with generating a professional A4 template. The template should include the following elements: 1. **Header**: Specify the content of the header, which should include the company logo and name. 2. **Body**: Instruct that the body area is to be left blank for content insertion. 3. **Footer**: Include space for the footer, which should contain contact information including email and phone number. 4. **Watermark**: Describe the centered watermark that should be subtly integrated into the background, ensuring it doesn't interfere with the readability of the text. 5. **Professional Standards**: Ensure that the overall design adheres to professional formatting standards suitable for business correspondence. Here is an example structure for the A4 template description: - Header: [Company Logo] [Company Name] - Body: [Blank for content] - Footer: [Email] [Phone Number] - Watermark: [Centered, subtle design] Please generate a comprehensive description for this A4 template according to the guidelines outlined above.