Facebook app developer needed asap jobs

...WordPress, and we need a proficient PHP and WordPress developer who can take on a range of tasks for our ecommerce project. Responsibilities will include: Mastering PHP Coding: Proficiency in PHP coding is essential for customizing and extending WordPress functionality to meet our specific requirements. Customizing WordPress Themes: We require expertise in customizing WordPress themes to ensure they align with our branding and design preferences while maintaining responsiveness and user-friendliness. Developing Unique and Functional Plugins: The developer should have experience in developing custom plugins to add unique features and functionalities to our ecommerce website. Building an Ecommerce Website from Scratch: We need a developer capable of building an ...

I am searching facebook and instagram post and ads designer. - creative designer - unique designs - long tem work - 2-3 post for each week Please send us your behance account or referance works

I'm in need of a skilled full stack developer with experience in blockchain integration. The project involves creating a standalone escrow crypto payment gateway. Key Requirements: - Proficiency in Blockchain Integration: You should be adept at integrating blockchain technology into a payment gateway. - Experience with Multiple Cryptocurrencies: The payment gateway will support USDT Bep20, Matic, BNB, and SQD Token. You should have experience working with these and have a solid understanding of how to integrate them into the system. The ideal candidate should be well-versed in security protocols, have a good understanding of decentralized finance (DeFi), and have a proven track record of successful blockchain integration projects.

I'm looking for a professional with a strong medical background to conduct a comprehensive review of my blood work. The review should focus on the following: - Determining inflammation levels: I'm particularly interested in understanding my inflammation markers. - Analysis of lymphocytes: I would like a detailed analysis of my lymphocytes, with special attention on my total lymphocyte count. This review will help me gain insight into my overall health and identify any potential health issues that might need addressing. Please only apply if you have a solid understanding of blood work analysis and can provide a thorough report with actionable insights. Thank you.

...in need of a social media manager who can help me enhance my personal brand. Your tasks will be: - Editing my existing content which mostly consists of photos, text posts, and videos - Managing my social accounts on Facebook, Instagram, and Tiktok - Creating content plans and weekly posting schedules The ideal freelancer for this job should have previous experience managing similar accounts and show proven skills in content creation and planning. A good understanding of what content works best on the selected platforms is essential. Your reign will predominantly cover Facebook, Instagram, and Tiktok, hence familiarity with these platforms is necessary. Strong skills in graphic design and video editing are desirable to enhance the photos and video content I already have. ...

As an owner of a web development project, I'm seeking an experienced Python developer with expertise in using Streamlit and LLM. Key responsibilities would include: 1. User Interface Design: - Creating initial layout adhering to modern aesthetics - Ensuring the design is versatile across different platforms for responsive use 2. OAuth Login - with google and facebook 3. API Ingegration 4. Database Integration: - Convenient and thorough integration of the database with our Python application 5. Functionality Development: - Comprehensive development of necessary functionalities The main purpose of our Python application is web development. So, if you're adept in front and back-end Python development particularly in building scalable web applicatio...

I am in need of a professional freelancer to resize my artwork. The current size of the artwork is unspecified. Ideal Skills & Experience: - Experienced in resizing artwork - Detail-oriented - Can provide examples of past work Application Requirements: Freelancers interested in this opportunity need to provide samples of their past work. This will give me a comprehensive understanding of your capabilities and suitability for this project. Looking forward to a successful collaboration.

I'm seeking a competent Java developer to assist in creating a web application geared towards a support ticket system. The resulting application should integrate the following features: - A structured form for ticket submission with SSO - A comprehensive ticket tracking system with history - A robust email notification system If you have extensive experience in Java, web application development, and design elements such as user login, you may be the perfect candidate. Proficiency in creating user-friendly interfaces that seamlessly incorporate form submission and tracking capabilities is expected. With your help, we can optimize our customer service process and streamline our ticketing system. Your advanced Java skills will make this a reality.

Conditions for completing the task: 1. Be a citizen of Botswana 2. Have a mobile phone number with the code +267 1. Leave a request on the website 2. Get a loan contract so that it is clear what the terms of loan payments are (you can not receive the loan itself) or you can just call or come to the office and ask them to send you their contract 3. Send me the loan contract

As a client with a keen eye for absolute perfection, I'm looking for a skilled Xamarin developer. You'll be tasked with debugging an existing Android application to ensure its smooth operation. Specifically, your job will be to: - Correct the OTP functionality in the app. - Implement real-time messaging capabilities. In order to excel in this project, you should have: - Expertise in Xamarin development. - Profound knowledge of Android apps. - Proven experience in real-time messaging functionality. - A keen eye for detail to effectively handle debugging tasks. I look forward to a swift yet efficient correction process.

I'm seeking a talented and versatile content writer to create engaging blog articles, website content, and social media posts. Your role will involve crafting pieces ranging from 500-1000 words as per assigned topics. - Writing Skills: You should have experience in writing diverse content, impeccable English, and the ability to maintain the unique voice of our brand across all channels. - Research Skills: Evidence-based writing requires excellent research skills to make informed discussions on various topics. - Adaptability: Able to switch between different writing types without losing authenticity or audience engagement. Please note the primary purpose of the content is yet to be decided, therefore flexibility to adapt accordingly will be a key marker for success in this project.

I'm looking for an Industrial Architect based in Ahmedabad to help with the commercialization of our company's licensed self-activation fire extinguisher. Key Responsibilities: - Identifying potential buyers within the commercial sector. Some of our target markets include Retail stores, Office buildings, Hotels and resorts, Hospitals, Kitchens, Industries, and Shops. Ideal Skills: - Previous experience in marketing industrial products, particularly within the fire safety sector, would be highly beneficial. - Strong connections in the Ahmedabad region's commercial sector or the ability to quickly establish contacts. - Excellent communication and negotiation skills, critical for pitching our self-activation fire extinguisher to potential buyers. Please note, this role is...

I am in need of a Python Developer with a strong emphasis on data analysis. The project will involve the following tasks, using Python's NLP libraries to analyze the text's context and semantics. 1. Data Preparation Data Cleaning: Standardize the format of resumes and job postings, removing any irrelevant information or inconsistencies. Data Anonymization: Ensure all personal information is anonymized to maintain confidentiality. Data Labeling (if necessary): Label the data, if required, to facilitate supervised learning approaches. 2. Developing the Algorithms Keyword-Based Algorithm: Extraction: Extract key skills, experiences, and qualifications from resumes and job postings using basic text analysis techniques. Matching: Develop a matching algorithm that compares t...

We need an experienced website developer to make our corporate website. The requirements and the website template is attached. Do not respond without going through the website template and requirement document thoroughly. You will be responsible for complete design, development, testing, hosting on our windows shared server. You will also create/ find images/ video for the websie pages. You will not violate any copyrights in doing so. If you have used AI tools for this, you will take our permission for the same and label it accordingly. The server is bought from Hostgator.in. You will also configure this server so that we get the copy of the emails sent by the website. After completion of your testing we will test it on the UAT environment provided by you. After our sign off, ...

We are searching for an experiences openstack developer to solve a boot issue on an openstack server. Only react if you have good experience with openstack and that you can quickly solve it

I need Php Laravel developer to work on existing admin pannel. Want to change the UI design & add some functionality. It is super urgent task that needs to be finish in max 1-2 days.

I am seeking a skilled graphics designer with a keen eye for minimalist designs. Your creative skills will be harnessed to create appealing T-shirt graphics for my brand targeted towards teenagers, balancing the fine line between simplicity and allure. The ideal candidate will be able to: - Understand and interpret popular culture trends and abstract concepts as design inspirations - Incorporate environmental messages subtly within the designs - Create designs that are appealing to teenagers while maintaining a minimalist aesthetic An inclination towards fashion or past experiences with T-shirt designing will be a bonus. Your portfolio showcasing similar works will be highly appreciated in the selection process.

I need a radiant logic developer for our highly complex system. The tasks the developer will perform include: - Integrating the radiant logic system with our existing systems - Building authentication and authorization modules - Creating identity management workflows The developer should be proficient in Java, as our system heavily relies on it. Familiarity with Java is an absolute must! The system we have is quite complex, necessitating extensive integration work. The ideal candidate should have experience in working with highly intricate systems.

Hello! I need someone that speaks good english otherwise dont react please See screenshot, when u click on PRIJSAANVRAAG button there must pop up a contact form that i have HTML code for. Needs to be done ASAP

I'm looking for an expert Angular developer to help with front-end development on my project. The key tasks you'll be tasked with include: - Creating innovative, interactive UI elements - Implementing Angular services - Collaborating with our team for third-party API integrations It's essential that you have a high level of experience with Angular, and have previously worked with third-party APIs. If you're the kind of freelancer who is meticulous and loves a challenge, I can't wait to see your bid.

I'm in need of an experienced Arduino expert, specifically one who is well-versed in home automation projects. While your specific tasks aren't limited to, they fundamentally revolve around the following: * Writing, troubleshooting, and optimizing Arduino codes. * Designing and prototyping of Arduino circuits. Ideal Skills: * Proficient in Arduino programming. * Rich experience in home automation projects. * Demonstrated success in circuit design and prototyping. In your application, please include a detailed descriptions of your past Arduino coding experience, particularly those related to home automation. Your proven track record and experience in this field is crucial for this project success.

I'm looking for a skilled Flutter developer to create an app with user authentication, push notifications, and in-app purchases. Key Responsibilities: - Create a user authentication system that is secure and user-friendly. - Integrate push notifications to keep users engaged. - Implement in-app purchases that are seamless and enhance user experience. Desired Skills and Experience: - Proven experience in developing Flutter apps. - Strong understanding of user authentication mechanisms. - Proficiency in integrating push notifications within Flutter apps. - Familiarity with in-app purchase implementation. - Ability to deliver high-quality work within the specified timeline.

I'm currently in need of an experienced Salesforce developer who can help me work on creating workflows, automations, dashboards and reports for my Salesforce Enterprise account. The developer will have admin access to sandbox with full permissions. Key tasks would include: - Creating efficient workflows and automations - Designing comprehensive dashboards and reports Ideal skill set: - Proven experience working with Salesforce Enterprise - Proficient in creating workflows, automations and dashboards - Strong attention to detail and excellent problem-solving skills This project calls for a self-starter who can independently navigate Salesforce Enterprise and deliver results in a timely and efficient manner.

I am currently in search of a talented and experienced product developer to create kitchenware and thermoware items that have a focus on food storage, organization, and meal prep transportation. Specifically, I'm concentrating on developing cookware sets, storage containers, casseroles, and lunch boxes. Ideal Skills: - Extensive experience in product development, specifically within the kitchenware and thermoware industry - Proficiency in working with various materials like, stainless steel, plastic, and non-stick materials - A keen understanding of user needs pertaining to food storage and meal prep appliances - Ability to produce practical, aesthetic and durable designs Job Responsibilities: - Design cookware sets, storage containers, casseroles, and lunch boxes made of st...

I'm looking for a professional who possesses unknown skill(s) to assist me with a project related to USDT. While the exact nature of the task is unclear based on the information provided, it would be advantageous if applicants have a strong background in website development, graphic design, and/or animation. - Skills Required: Experience with website development, graphic design, or animation. Knowledge or experience with USDT or other cryptocurrency is a plus but not specified. - Be Prepared to Show: Success in your application will be largely dependent on examples of past work. Prior experience in these fields will give me a stronger confidence in your potential performance on this project. Your proposal should demonstrate your suitability for the project, even though complete d...

Tasks: Data Preparation: Create a dataset with anonymized student resumes and faculty project descriptions. (I will provide you 50 resumes and 50 job descriptions) Ensure the dataset reflects a variety of academic disciplines and project types. Develop Algorithms:(This is the core) Keyword-Based Algorithm: Develop an algorithm to match explicit keywords and phrases from resumes and project descriptions. NLP-Based Algorithm: Utilize Python's NLP libraries to create an algorithm that analyzes text context and semantics for a more nuanced matching process. Algorithm Evaluation: Test both algorithms on a micro job portal for academic collaborations. Use quantitative metrics like match accuracy and processing efficiency for evaluation. Collect qualitative feedback through surveys fro...

I'm in need of a Laravel expert to help with a variety of tasks for my website. You'll be responsible for backend development, frontend development, and database management. If you have experience with Laravel 8 and have an eye for detail, this project is for you. Key Tasks: - Backend Development: This involves building the core logic and functionality of the website using Laravel 8. - Frontend Development: You will be using Laravel Blade templates to create user-friendly interfaces. - Database Management: Your role will also cover structuring and optimizing the database for the website to ensure it's running efficiently. The primary goal of this project is to introduce new features to the website. I'm looking for someone who can not only follow instructions but also...

Dear Freelancer, Please write carefully the job proposal We are looking for a PHP Laravel expert to modify a service we use in our company. To explain the solution we have: -It works like a ticketing service -Multi level of approval -Customer side is working fully What we need: -Be able to create "intern ticket" by employees -Help us to redefine roles and permissions (we know what we need but we need you to understand what we have and explain how it works clearly) -Make testing on all the roles and the workflow to be sure that people that don't need to see the ticket won't see it for example -Modify and create new fields with conditions -Assign a ticket category to a specific employee of a specific service After modifications we'll need future additions that w...

Need a designer that can design homepage of a a shoes brand for us. Need it done quickly Not looking for a developer only designer

I'm looking for a talented voice artist, comfortable in Hindi, to give life to our demo videos on YouTube. The artist can be of any gender, as long as they have an engaging and clear vocal quality. - Content: You'll be narrating demo scripts, explaining software features and functionalities. Experience in doing similar work will be a big plus. - Audience: These demo videos are targeted at adults, so a more mature and confident voice style is preferred. Prerequisites: - Fluency in Hindi - Experience in voice-over for demo/explanatory videos - Ability to encapsulate the essence of the content and reproduce it in an engaging manner. If you think you've got the talent to bring our content to life, please apply. Samples of previous work are appreciated.

I am looking for an experienced social media marketer who can effectively manage my social media platforms- Instagram, Facebook, and Tiktok. The goal of the campaign is threefold: 1. Increasing Brand Awareness: I'd like to establish my presence strongly within the forex trading community. 2. Driving Website Traffic: Generate interest and convince people to visit my site. 3. Generating Leads & Sales: Ultimately, the aim is to increase subscription to my trading services. The target audience for this campaign is working professionals aged between 25 to 34. The ideal candidate will have a proven track record in targeting this demographic, creating engaging content, and driving growth on these social media platforms. Knowledge and experience in forex trading will be an ...

I require a seasoned freelancer with robust experience in video editing, specifically in creating compelling motion graphics and title sequences. Skills & Experience: - Expertise in Adobe Premiere Pro is a must - Proven experience in creating engaging motion graphics would be advantageous Project Scope: - You'll be provided with a 9-10 minute long video that needs your expert editing touch. Your task is to apply your advanced skills in Adobe Premiere Pro to bring the video to life through captivating animations and title sequences. This role requires a dedicated professional who pays great attention to detail and can deliver within strict timelines. If you fit this description, I'd love to hear from you.

Overview: We are seeking a creative and strategic Marketing Specialist to drive brand awareness and increase traffic and sales for our online pharmacy and generic medication website. As traditional advertising avenues such as Facebook and Instagram are not available to us, we need someone who excels in non-conventional marketing tactics. The ideal candidate will have a deep understanding of platforms like TikTok and Reddit, and possess the ability to identify and leverage other suitable platforms for our business. Responsibilities: Develop and implement innovative marketing strategies to promote our online pharmacy and generic medication products. Create compelling content tailored to each platform's audience, ensuring maximum engagement and reach. Manage and opt...

I'm needing an expert in both Facebook and Instagram marketing to increase the brand awareness of my company. Objectives: -Devise a creative and effective social media strategy that targets working professionals. -Increase meaningful engagement, reach, and online presence on these platforms. Ideal Candidate: -An expert in Facebook and Instagram marketing -Experience with audience targeting and analytics -Prior work focusing on working professionals as a target demographic -Can generate innovative ideas to increase brand awareness. I am open to unique strategies and am awaiting your proposal. Collaborate with us and let's make something great together.

I am in search of a highly-skilled MS Excel expert who can help me organize my small business through meticulous data entry and intelligent formulas. The ideal candidate will be skilled in: - Invoice creation - Payment receipt tracking - Maintaining project-wise details The work will involve managing an Excel sheet with less than 100 columns and rows. When creating invoices and payment receipts, you'll need to manage data fields such as: - Customer Name - Service/Product - Amount - Invoice Number - Date - Tax - Customer Address - Payment Method - Invoice Due Date Expertise in Excel's calculation and analysis functions will be especially valuable for this job. This opportunity is perfect for those with a knack for data organization and attention to detail.

I'm in need of a profound writer who can craft captivating blog articles and Guest Posts related to Kid toys. Your main objective will be to create content that will propel our website to the top of search engine rankings. • Responsibilities: - Craft engaging blog articles on lifestyle and entertainment topics - Write captivating website content to improve our SEO - Implement SEO best practices in all content • Ideal Skills: - Excellent research and writing skills - Profound knowledge in SEO content writing - Experienced writer in lifestyle and entertainment topics Your role will be pivotal in improving our online presence and search engine ranking. Looking forward to working with an experienced and dedicated professional.

...pages. The ideal candidate will be designing elements such as our color scheme, logo placement, and font selection for our Facebook page which is intended for a Dutch-speaking audience. The goal is not only to create visually pleasing designs but also to enhance our page in such a way that it becomes more attention-grabbing, leading to an increase in website traffic, brand awareness, and lead generation. The designs should be able to connect to our target audience who is interested in Italian lifestyle food and beverages, fine wines, and wine services. Key Skills and Experience: - Strong graphic design skills with a focus on social media platforms, particularly Facebook - Some feeling for Dutch language to ensure appropriate and effective design features - Experience i...

I'm in need of an experienced web developer to create a fully functional e-commerce website for my B2B business. Key Requirements: - E-commerce Website: I'm looking for a professional who has a strong grasp of e-commerce website design and development. - I need eyecatching website desighn for my furniture product (*i want with domain hosting . star trade enterprise name ) star trade enterprise ahmedabad - Payment Integration: The website should have UPI payment gateway integration. Additional Details: - Scale: I will be listing more than 100 different products on the website, so the website should be designed to handle this volume. Ideal Freelancer: - Proven Experience: A portfolio demonstrating successful past e-commerce websites will be highly valued. - Paymen...

I'm seeking a skilled digital marketer to design, run, manage and assess a Facebook ad campaign aimed to generate leads (customers to book initial new patient appointment) among adults within a 5 minute drive of my dental practice. Key Responsibilities: - Develop a strategic plan for the ad campaign with lead generation as the main goal (customers to book initial new patient appointment) - Ensure the campaign specifically targets adults within a 5 minute drive of my dental practice. Ideal Skills and Experience: - Proven experience launching and managing Facebook ads. - Proficiency in demographic targeting and understanding audience interests. - Track record of successful lead-generation campaigns. - Exceptional understanding of Facebook's advertising platform.

I'm in the testing and debugging stage of my mobile game project, and seeking a skilled programmer with experience in both Firebase and Unity. Your assistance is crucial for ensuring my project's success. Key Responsibilities: - Assist our current programmers with debugging and testing - Implement Firebase-related features to enhance user experience - Collaborate with the team to ensure a smooth integration of Firebase and Unity Ideal Skills and Experience: - Proven experience with Unity game development - Proficiency in Firebase, particularly in mobile game integrations - Strong debugging and testing skills - Excellent communication and team collaboration abilities

I need a React.js developer with at least 3 years of experience to help me with my project. The primary goal is to fix bugs in the existing application while improving its UI/UX design. Key Responsibilities: - Frontend development - Fixing functionality errors - Resolving user interface inconsistencies The ideal candidate should have: - 3+ years of experience in React.js - Proven track record of fixing bugs - Strong UI/UX design skills This is a long-term project with a budget of 250 INR per hour. If you have the required expertise, please reach out.

I'm looking for a talented SEO specialist to boost my website's search engine rankings. My primary goal is to increase visibility and gain more organic traffic. Key Requirements: - Demonstrated experience in global SEO strategies. - Proven track record in improving search engine rankings for technology-based websites. - Strong understanding of current SEO trends and algorithms. The ideal candidate is a dedicated professional with a deep knowledge of the technology niche and proven results in boosting global search engine :

I'm in need of an experienced Laravel developer to tackle a big, complex project. Your duties will involve: - Backend development: You should know how to build structured and maintainable code bases. - Database management: You'll be dealing with a sizeable database, so experience in dealing with large databases is super crucial. - API integration: Be prepared to integrate numerous APIs into the project. This project will be built using Laravel 8.x, so prior experience with this version is mandatory. If you're a problem solver, have a knack for large-scale projects, and have a deep knowledge and experience with Laravel, then this project is for you.

I'm looking for a skilled Unity UI Developer to help implement critical UI functionality with a focus on Corporate Branding. The key tasks for the project include: - Implementing UI functionality: The primary task for the selected candidate is to create an efficient, user-friendly UI. This will include developing menus, buttons, and other interactive elements as necessary. We have a figma design which you can use for reference. The UI should be optimized for: - Desktop computers: It's crucial that the UI is tailored for desktop browsers, ensuring a seamless user experience across this platform. - Web GL: The UI should also be optimized for Web GL, allowing it to function smoothly and responsively online. There are certain user interface elements that are crucial for th...

I am in need of an experienced developer fluent in GSAP (GreenSock Animation Platform) and ScrollTrigger JS Library. Specifically, I need expertise in implementing dynamic animations that are triggered during page scrolling. Key Requirements: - Proficient in GSAP and ScrollTrigger libraries - Proven experience developing engaging web animations - Able to show examples of past work demonstrating these skills Application Instructions: Interested freelancers should provide examples of previous work where they have successfully applied GSAP and ScrollTrigger in a similar context. Skills and Experience: - Advanced knowledge of GSAP and ScrollTrigger JS libraries - Prior experience in creating dynamic scrolled animations - Ability to understand project requirements effectively with m...

We are seeking a talented MERN Stack Developer to join our dynamic team. As a MERN Stack Developer, you will be responsible for designing, developing, and implementing robust web applications using the MERN (MongoDB, , React.js, Node.js) stack. You will work closely with our team of designers and developers to create innovative solutions that meet our clients' needs. Responsibilities:  Develop and maintain web applications using the MERN stack.  Collaborate with cross-functional teams to define, design, and ship new features.  Write clean, maintainable, and efficient code.  Conduct code reviews and provide constructive feedback to other team members.  Troubleshoot and debug issues to ensure optimal performance and reliability.  Stay up-to-date with emergi...

I am in need of a knowledgeable digital marketing strategist to mentor me in the specific areas of Social Media Marketing and Email Marketing. Ideally, the perfect candidate will have: - Extensive experience in creating and optimizing engaging and effective social media content for businesses, particularly on Facebook and Instagram. - Proficiency in advanced Email Marketing strategies, with a knack for creating compelling content that motivates conversions. - Proven record of successfully using digital marketing strategies to drive sales. Your role would not only include teaching me how to efficiently use these digital platforms to enhance my online presence, but also steer me towards achieving my primary goal - increasing sales. Your up-to-date knowledge of the market trends and...

I'm looking to set up Google Ads and a retargeting strategy to boost onl...previously visited my website or interacted with my ads. The retargeting strategy should include Facebook and Instagram, as well as Google ads. Target Location: Canada. Industry: Vitamins & Supplements Ideal candidate: - Experience: I'm looking for an expert with a strong background in creating and managing successful Google Ads campaigns. Experience in implementing effective retargeting strategies is a must. - Proven Results: It's crucial that the freelancer can demonstrate a history of boosting online sales through Google Ads and retargeting. - Familiarity with Social Media Platforms: The ideal candidate should have experience in running retargeting ads on social media platforms, particu...

I am seeking a seasoned fashion designer with a niche in women's & man’s fashion to help bring my design concepts to fruition. The ideal freelancer should have: - Proven experience in couture woman & menswear design. This is critical, as I seek to create unique pieces for my affluent, fashion-conscious clientele. - Knowledge and appreciation of luxury-grade materials and designs. - An understanding of the expectations and tastes of luxury fashion enthusiasts. - Proficiency in design software and sketching techniques. - Ability to translate trends into brand-appropriate fashion items. - Ability to work within schedule and meet tight deadlines. This project provides an exciting opportunity to create distinctive, high-quality garments that redefine modern luxury.

I'm looking for an experienced Python developer to create a script for me. The script should take in a JSON file with product information and use it to generate 2D animated videos. These videos will be used for social media marketing. Key Requirements: - 2D Animation: The videos should be created in a 2D animation style. - Dynamic Animation Changes: The video customization should be dynamic, with animations changing based on the JSON data provided. - Social Media Marketing: The intended use for the videos is social media marketing, so they should be engaging and shareable. Ideal Skills: - Python: Proficiency in Python is a must, as the script will be written in this language. - 2D Animation: Experience in creating 2D animated videos is required. - Data Handling: Knowledge of ...