Lay a flat piece of treated lumber in the doorway to form the sill. Check it with a level. You want the sill to be as flat as possible. Most likely you'll need to slip some wooden shims under the lumber to level it. The length of wood  you need for the sill depends on the width of your door. Use a tape measure to figure out the dimensions. Purchase a pack of 3 in (7.6 cm) coated deck screws. Measure the length of the sill. Place screws at both ends and place the remaining screws approximately every 9 in (23 cm). Screw them in place with a cordless screwdriver. Measure the door from the bottom left corner to the top right corner. Then, measure the door from the bottom right corner to the top left corner. The measurements should be exactly the same. If they're not, the door isn't square and needs to be adjusted. Hold the door and frame in the opening. Use a level to make sure they're plumb. Be sure to hold the door trim up to gauge whether or not there's enough room for it. You may need to make adjustments to fit them all. If there isn't enough space for the door, frame, and trim, you'll have to reduce the size of the door. Once the frame is set, you can adjust the door with a belt sander or circular saw. It's also possible to sand down the siding in the doorway to create the extra space.
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One-sentence summary -- Level the door sill with shims. Secure the sill with deck screws. Make sure the door is square. Set the door in the opening to check the fit. Sand or saw the door to size.

Q: A noun is any word that names a person, place, thing, or idea. Nouns can be concrete (Alice, dog, table, etc.) or abstract (beauty, independence, cycle, etc.).   Proper nouns are used to name a specific person, place, or thing, and the main words are always capitalized (Fred, New York, the Declaration of Independence). Nouns can be either singular or plural. Nouns can be possessive, in which case they typically end in 's or s'. Sometimes, a noun is not always named. Words that do not directly name a person, place, thing, or idea, but take the place of a word that does, are pronouns.  Some pronouns stand in for people's names (he, our, they, hers, etc.). Other pronouns represent an object or idea (it, these, this, etc.). Pronouns may also stand in for very indefinite nouns that may be difficult to name without the use of a pronoun (everyone, no one, something, etc). A verb is any word that is used to express an action (run, cleaned, driven, etc) or being (is, was, been, etc). Verbs have multiple tenses that express when the action took place. Auxiliary verbs (also known as helping verbs) are words that are used to change the tense of the main verb (will, did, would, etc.). These are still considered verbs. An adjective is any word that is used to modify or describe a noun or pronoun (blue, many, smart, etc.). Adjectives typically answer questions like "how many?", "what kind?", or "which one?"  Numbers are considered adjectives when they are used to answer the question "how many?" Articles (a, an, and the) are considered adjectives by many because they answer the question "which one?" However, some people consider articles to be a separate part of speech. An adverb is similar to an adjective in that it is used to describe or modify. Instead of modifying a noun or pronoun, however, an adverb modifies a verb or adjective (happily, extremely, then, etc.). Adverbs typically answer the question "how?", "why", "when?", or "how much?" Adverbs may also modify other adverbs. (I ran very quickly.) A preposition is a word or phrase that is used to show the relationship between noun or pronoun and another element in the sentence (at, by, in, to, from, with, etc.). Prepositions are typically very short words. A conjunction is a word that connects other words, phrases, or clauses (and, but, or, because, etc).  Coordinating conjunctions are used to join two clauses that are equally important to the sentence. There are 7 coordinating conjunctions: and, but, for, nor, or, so, and yet. (I like cats, but I don't like dogs.) Subordinating conjunctions are used to join a main clause and a subordinate clause, which is less important to the sentence. (I went outside, although it was raining.) An interjection is a word or phrase used to express an emotion or feeling, such as surprise. (oh, wow, my goodness, etc). Interjections are capable of standing alone and are not grammatically related to the rest of the sentence. However, they can also be included in a sentence, separated by parenthesis, dashes, or comas on either side of the interjection.
A: Identify naming words as nouns. Know that pronouns stand in for nouns. Recognize action words as verbs. Learn that adjectives modify nouns and pronouns. Know that adjective and verb modifiers are adverbs. Understand that prepositions express relationships. Identify words used to join clauses as conjunctions. Recognize exclamations as interjections.

Article: Introduce a command word when your dog starts to consistently respond to the food lure. Say “Duck!” when you present and lower the treat. Eventually, the command will allow you to get your dog to duck without having to use a treat. Incorporate the command into the verbal praise you offer when it ducks properly. Say, “Yes! Good duck!” with all the giddiness you can muster. Repeating the command when you praise your dog will help reinforce the connection it makes between the sound of the word, the action, and the reward. Keep practicing using treats and the command word for about 20 minutes. You might need to make your training sessions a little shorter if you’re working with a puppy or easily distracted dog. Try to schedule your training sessions when your dog is least likely to be distracted. Sights and sounds like people entering and leaving the house make it harder for your dog to focus on training.
Question: What is a summary of what this article is about?
Say “Duck” as you place the treat in front of your dog. Say “Good duck” when you let it have the treat. Practice for 20 minutes at least once a day.

Problem: Article: Just search for your city and the words “recycling center.” Recycling centers that accept cans and bottles might be at big recycling plants or even at your local grocery store. Most recycling centers limit how many containers a person or group may turn in per day, and some only allow county residents to recycle there, so make sure to read the requirements before you go. Go to your local recycling center’s website to learn what items they accept. If they don’t have clear guidelines, call them. The ten states with bottle deposit will accept aluminum cans, plastic and glass bottles from soda and beer. Specific rules and applicable rules can vary considerably between states. Some recycling centers also require that certain beverage containers have a stamp indicating that the item came from that store or the distributor who wholesaled the beverage to that store.
Summary: Locate nearby recycling centers by searching online. Learn which items can be redeemed.

INPUT ARTICLE: Article: Let the ball drop onto the middle part of your thigh. If you bounce the ball off of your knee, it is almost guaranteed to go flying out of reach.

SUMMARY: Hold the ball above your thigh.

Article: .. In the field at the bottom of the New Connection window shown below type in the address of the server you wish to connect to. Note that you must have an account to log in.  Your keystrokes will not be displayed, for security purposes. Click the + sign under the Server column.
Question: What is a summary of what this article is about?
To ensure a secure connection, use SSH (Secure Shell)  From the Shell menu, select New Remote Connection. Enter a host  name or IP address. Click Connect  You will be prompted for your password. Save your settings. Enter the host name or IP address of the server in the entry screen pictured. Click OK. Enter the user ID in the User field, click Connect, and your information will be saved.