Screenplay coverage is a process in the entertainment industry, specifically in the film and television sectors, where a script is analyzed and evaluated by a professional reader or script analyst. The goal of screenplay coverage is to provide feedback and insights to the script's author, production companies, studios, or agents to help them make informed decisions about the script's potential for development and production.
The coverage typically includes the following elements:

1. Logline: A brief summary of the script's premise in one or two sentences.
   
2. Synopsis: A more detailed summary of the entire script, including major plot points and character arcs.
   
3. Comments on the Strengths: A discussion of what works well in the script, such as engaging characters, a compelling storyline, or unique and original ideas.
   
4. Comments on the Weaknesses: Constructive feedback on areas that need improvement, such as plot holes, underdeveloped characters, inconsistent tone, or pacing issues.
   
5. Marketability and Audience: An assessment of the script's commercial potential and target audience.
   
6. Recommendation: A final recommendation on whether the script is considered "pass," "consider" (with some revisions), or "recommend" (ready for production).
   

Coverage is an essential step in the development process of a screenplay, as it helps writers and industry professionals identify the script's strengths and weaknesses, make necessary improvements, and decide whether to pursue further development or production. It is important to note that different companies or individuals may have their own specific formats and criteria for screenplay coverage.

Creating a compelling screenplay logline is essential for grabbing the attention of potential readers, producers, or agents. A logline is a brief, one to two-sentence summary of your screenplay's central concept, focusing on the main character, their goal, the conflict, and the stakes. Here's a step-by-step guide to creating a screenplay logline:

1. Identify the main character: Start by introducing the protagonist. Who is the story about? What are their defining traits or characteristics that make them interesting?
   
2. Describe the character's goal: What does the protagonist want to achieve or accomplish throughout the story? This goal should be specific and significant.
   
3. Introduce the conflict: What stands in the way of the main character achieving their goal? This could be an antagonist, a personal obstacle, or a challenging situation.
   
4. Highlight the stakes: What are the consequences of success or failure for the main character? The higher the stakes, the more engaging the logline.
   
5. Keep it concise and clear: Loglines should generally be one to two sentences, so every word counts. Avoid unnecessary details and focus on the core elements of the story.
   
6. Show the uniqueness: What makes your screenplay stand out from others? Highlight any original or intriguing aspects that set it apart.
   
7. Consider the genre and tone: Depending on your screenplay's genre (e.g., drama, comedy, thriller, sci-fi), make sure the logline reflects the appropriate tone and style.
   
8. Write and revise: Start with a draft logline and then keep refining it until you have a concise and attention-grabbing summary.
   

Here's an example of a logline for the movie "Jurassic Park":
"When a group of scientists is invited to an island theme park filled with cloned dinosaurs, they must fight to survive when the prehistoric creatures break free and wreak havoc."
Keep in mind that loglines are meant to provide a snapshot of your screenplay's concept, so it's natural to go through several iterations to find the most effective one. It's also helpful to get feedback from others to ensure your logline is clear and enticing.