Problem: Article: A formal business letter on company letterhead sets the appropriate tone and establishes the letter as official business communication. Set a standard font and margins, typing the body of the letter in block-paragraph style – single-spaced, with a double-space between paragraphs.  Avoid using any abbreviations when you type addresses in formal business letters. For example, instead of typing "123 Main St.," you would type "123 Main Street." If your letterhead includes the address for your business, you can typically eliminate the address block for yourself. Begin your letter with an enthusiastic tone, welcoming the recipient to the company in their new capacity. You might also include a brief summary of the recipient's job duties unless the job title makes them obvious. For example, you might write: "On behalf of Bob Builders, Inc., I am pleased to offer you the position of Secretary at a salary of $28,500 a year. Your first day will be January 22, 2019." If there are any limitations to your offer they should be clearly stated. Additionally, if the offer is contingent on anything, those contingencies should be stated up front.  For example, the offer may be contingent on a clean background check, or a clean drug test. This section may also include any documents the new employee needs to sign, such as a confidentiality agreement or a non-compete agreement. If you include any contingencies, provide the new employee with a deadline by which those things need to be completed. If you're only asking for documents to be signed, you might state that those documents can be signed on the new employee's first day. If your company offers health insurance, retirement benefits, educational assistance, paid time off, or other benefits, list those briefly. Let the new employee know when they will be eligible for those benefits, and how they can find out more information about them. Some employers start benefits at day one, but most require employees to work 60 or 90 days before they become eligible for benefits. Let the recipient know that you're grateful for their interest in your company and that you're glad they're coming to work with you. Communicate your excitement or enthusiasm for having the new employee join your team.  For example, you might say "Thank you so much for your interest in our mission here at Bob Builders, Inc. We're excited to bring you on board and look forward to your contributions." Use a formal closing immediately before your signature, such as "Sincerely" or "Sincerely yours." The business letter template provides 4 blank lines for your signature after the formal closing. Under that space, type your first and last name. Under your name, type your job title and the name of the company. For example, you might type "Director of Operations, Bob Builders, Inc." Make sure your letter is free of any typos and spelling or grammatical errors. You may also want someone from human resources to read over the letter and verify that all the content is correct. Double-check numbers in particular. It's easy to transpose digits by mistake, and this can lead to a huge misunderstanding. These types of mistakes could also have legal consequences. Your letter will look more professional if printed on quality paper. Even if you send an email confirmation, mail an official signed copy as well. Sign the letter in the space provided, using blue or blank ink. Include any credentials, such as "CPA" or "JD," if appropriate. Mail the letter promptly, so that your new employee will receive it well before their planned start date.
Summary: Use business letter format on company letterhead. List the job title, salary, and start date. Summarize the terms and conditions of the offer. Provide details about any benefits your company offers. Close by thanking the recipient. Include your job title under your name. Proofread your letter carefully. Print and sign your letter for mailing.

In one sentence, describe what the following article is about: An extra 500 calories per day is enough to help you gain weight, but should not leave you feeling sluggish, bloated or sick.  Just by gaining an extra 500 calories a day (which is pretty easy if you follow the instructions below) you can aim to gain between 1lb and 1.5 lbs per week. However, it is important to be aware that these extra 500 calories should be gained in a healthy way, by eating more calorie-rich foods that are still packed with vitamins and nutrients. Gaining weight by eating more junk food is not a good idea, as it will leave you feeling unwell and sapped of energy, and could lead to further health problems down the line. You might also boost your calorie intake by adding a protein powder to your diet. Protein powders are rich in lean protein and extra calories and can be blended into foods like smoothies, yogurt, hot cereals, and others. You should always consult with your doctor or nutritionist before embarking on a weight gain plan. Foods containing healthy fats are full of nutrients and also high in calories, making them a great option for weight gain.  Foods containing plant fats should be your first option - this includes items such as nuts, seeds, peanut butter, avocados and olive oil. Spread peanut butter (or almond butter) on toast, eat half an avocado with every meals, eat handfuls of nuts or seeds as a snack and sprinkle olive oil over salads and veggies. You can also gain some healthy fats from animal sources, however these foods also contain saturated fats (the unhealthy kind) so you should only eat in moderation. Foods containing healthy animals fats include lean meats and full fat dairy products - although if you have high cholesterol, you should probably stick to low-fat options. Protein-rich foods are your best friend when you're trying to gain weight healthily. They help to build lean muscles, rather than adding much fat. Eating protein is particularly important if you plan on doing strength gaining exercises.  Good sources of protein include lean meat, fish and poultry, in addition to eggs, whole grains, dairy products and legumes. You should aim to eat about 5 oz of protein per day, from a combination of these sources. You can also increase your protein intake by drinking protein shakes, or adding a protein supplement to juices and smoothies. One easy way to increase your calorie intake with each meal without the necessity of actually eating more food is to cook using oil or butter.  Try stir frying your vegetables in a knob of butter, or drizzling a little olive oil over salads and cooked veggies. Simply by adding a tablespoon of these fats to each dish, you could be adding 100 calories! However, it's important not to go overboard when cooking in fat, as too much can be unhealthy. When possible, gravitate to healthier fats like olive, canola or safflower oil and avoid using unhealthy ones like lard or margarine. Another good trick for increasing your calorie intake is to simply to consume more calorie-laden drinks. This will help you to gain weight without ruining your appetite or causing you to feel bloated.  Try drinking a large glass of orange juice in the mornings (along with your normal breakfast), it's high in calories and is tasty and refreshing too! Consider drinking a glass or two of milk throughout the day - the full fat option is high in calories but will also provide lots of protein and calcium - which is ideal for thinner people who are more prone to lower bone densities. Protein shakes will help you to gain muscle mass, particularly if you're working out, while tasty milkshakes are perfect for the occasional treat.
Summary:
Consume an additional 500 calories per day. Consume more healthy fats. Eat more protein. Cook using oil or butter. Drink more calories.