Best firefox addons programmerspekerjaan

I have a persistent error - Fatal error: Cannot make non static method Forminator_Addon_Abstract::is_show_full_log() static in class FortressDB_Forminator_Addon in /home/customer/www/ on line 444 Ideal Skills and Experience: - Proficiency in WordPress - Background in troubleshooting and resolving site loading errors - Familiarity with PHP Tasks include: - Identifying the root cause of the loading error message - Developing and implementing a solution to resolve this error - Testing the site to ensure the error no longer occurs during loading - Providing a summary of the work completed along with any necessary instructions for future reference.

I'm in need of a skilled professional to install and setup a Discourse Forum on my Linux server. This task is not a standard installation. My expectation is for an extensive customization of the forum's look and functionality, according to my specifications, which I'll provide. Notably, no additional plugins or addons are required for this project. Ideal candidates for this task should have: - Proven experience with Discourse Forum, particularly at customization level - Proficiency in operating and managing Linux servers - Attention to detail in adhering to provided specifications

I'm looking for a skilled developer to build an addon for NinjaTrader 8. This project entails creating an addon with capabilities for trade automation in accordance with specific trading rules I've established. Here's what I need: - Trade ...need: - Trade Automation: The add-on should fully automate trading processes that adhere to my provided rules. - Familiarity with NinjaTrader: Ideally, you should have previous experience with NinjaTrader platform, specifically NinjaTrader 8 version, or have confidence in your ability to quickly learn and work with it. In your bid, please indicate your experience with NinjaTrader 8 and creating addons or features for trade automation. I look forward to seeing proposals and hopefully working with one of you soon. *Candidate ha...

I'm looking for an experienced developer with in-depth knowledge of creating and tweaking cookies. Key Tasks and Requirements: - Design and write a single-page script. - The script must efficiently add and modify cookie values. - Ensure compatibility across multiple web browsers, including Google Chrome, Mozilla Firefox, Safari, Opera, and Edge. Skills and Experience Needed: - Proficiency in writing and optimizing scripts. - Solid understanding of cookies and how they work across various browsers. - Ability to work without the need for specific instructions or criteria for adding or modifying cookie values. This project does not require the creation of any specific criteria for cookie alterations. However, a keen eye for detail and robust testing across different platfo...

I'm looking for a skilled developer to create a Firefox extension (add-on) that will use both simple scraping and Chat GPT API in order to send customized prompts (based on the scraped elements) and receive responses. The workflow will be very simple: 1. The user will come to a website and start the extension, which will extract 5 different text elements (these will be pre-selected). 2. After that, the extension will automatically modify the prompt (input the extracted data to the template prompt) and then send it to Chat GPT API. 3. It will display the response from Chat GPT API.

Freelancers, Here's a super easy way to make 500$. We've come up with this contest to curate freelancer talent in the category of playlist making, and the winner, except for these 500$, has an chance of getting a full time employment contract. THE MISSION: Make a playlist of hot/sexy/aesthetic songs - put them together in one "mix" and upload to Youtube. Reference: DETAILS: You will use trending and popular songs to make this hot mix of yours, with each song smoothly transitioning onto the next. Use songs by popular artists, songs trending currently and songs by artists that we provide AND upload the mix to Youtube. Reference videos are above, that is what you need to do. You can upload up to 20 mixes. REQUIREMENTS: 1. You must use engaging video titles, such a...

...Plasmo browser extension. The problem lies in the data processing, specifically, there seems to be a duplication issue happening in the backend that's negatively impacting the user interface. Tasks: * Identify and correct logic discrepancies causing incorrect data processing * Fix duplicated backend processing impacting the user interface * Convert extension to all chromium browsers, safari, firefox Ideally, I'm looking for someone that has experience in Chrome extension development. If you've previously worked on the Plasmo browser extension, that would be a huge plus. In your application, please provide examples of your past work, specifically projects that centered around resolving similar issues. Skills Required: * Plasmo browser Extension Developement *...

...creation and login. - Booking Process: The ability to facilitate a smooth, glitch-free process from selecting a service to confirming the booking. - Payment Process: Securing the process of transactions, ensuring that all payment methods are working correctly and reliably. Platforms and Browsers to Be Tested: - Platforms: Windows PC, Mac, Android, and iOS devices. - Browsers: Google Chrome, Mozilla Firefox, Safari, and Microsoft Edge. Ideal Tester: - Skilled in both automated and manual testing strategies. - Experience working with different platforms and understanding of their unique characteristics. - Familiarity with multiple browsers and their various versions. - Prior experience in testing user interfaces, booking systems, and/or payment processes would be a major plus. B...

I have an existing crm , where i need modifications and addons I'm in need of an experienced PHP developer to help me with some minor addons for my project on an urgent basis. Specifically, I need help with: - Email Notification: Implementing a feature that sends email notifications to users when certain events occur within the platform. - Captcha Integration: Adding a Captcha system to enhance the security of the project. - Social Media Sharing Buttons: Integrating social media buttons to allow users to easily share content from our platform. I'm looking for someone who is proficient in PHP, has experience with developing addons, and can work efficiently to deliver the project as soon as possible. Your attention to detail and ability to meet deadlines wil...

I'm on the lookout for a skilled web designer who can assist in developing a comprehensive website focused on personalized nutrition analysis website This website will function as a Personalized Meal Plans Generator, Nutrition Facts label, Restaurant menu Creator, API Upsell that offers tailored dietary plans to business owners. The primary aim of the website is to provide top-notch, customized nutrition analysis/guidance to our target audience. Key project requirements includes , but not limited to: - Aesthetically pleasing UI/UX design that aligns with the nutrition industry, and uniquely awesome with nutrition industry SEO integrated to rank top on google - A user-friendly interface that simplifies the meal plan creation process etc - AI reverse engineering of Nutrition Facts ...

I need an expert writer to craft a 5-minute best man speech for an upcoming wedding. The speech should be comedic in tone while incorporating stories about my longstanding friendship with the groom. Skills & Experience Required: -Prior experience in speech writing, preferably comedic. -Ability to capture unique personal experiences in an entertaining way. Deliverables: -A completed, write-up of the best man speech that fits within a 5 minutes speech slot. The ultimate goal of this project is to create an enjoyable, memorable moment for all wedding attendees, especially the groom through a funny and personal speech.

I urgently need a professional who is skilled in developing static web pages using bootstrap framework. These pages will be primarily used for displaying information and should be compatible with various browsers - Chrome, Firefox, Safari, and Edge. For now, the focus is on optimal viewing on laptops and desktops. Skills and experience: - Proficiency in Bootstrap Framework - Excellent knowledge of cross browser compatibility - Understanding of webpage layout aesthetics Please note, the completion of this project is time sensitive and I would appreciate a rapid response.

I require an experienced developer to tweak the Bookly plugin for a website. The solution we need involves ...the Group Booking addon in Bookly to ensure that the price is fixed for the entire group, as opposed to the current basic functionality which multiplies the price by the number of attendees. Key requirements: - Customise the Bookly PRO plugin to allow fixed pricing for group bookings - modifications ideally as a separate add-on plugon or file to allow for plugin updates of the main plugin and addons Ideal Skills: - Proven experience with Bookly plugin modifications - Strong understanding of WordPress plugin development and PHP - Good problem-solving skills and ability to workaround Please note that this project could lead to additional work as we continue to enhance our...

...a mix of physical products, digital products, and services. I need to create a system that validates paid memberships pro or memberpress subscriptions using a qr code with a family and frendly interface that verifies from a mobile device and validates it. I want something similar to this but instead of checking events, check if you have an active subscription or not: The QR code must be customised as with this plugin: I need the plugin to create a validation system either by an api or by a system that verifies in real time if the subscription is active or not. The check in interface must provide customer data such as name, surname, photo, registration date, subscription start date, subscription end

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

Attention branding experts Are you a branding genius? We are a video company and I am looking for: Branding package essentials 1 Concept 3 Revision rounds transfer of copyright deliverables .INDD and .IDML source files & print-ready .PDF One...transfer of copyright deliverables .INDD and .IDML source files & print-ready .PDF One (1) principle logo design Two to three (2-3) logo variations Facebook, Twitter, and Instagram cover and logo profile photos. Graphic design assets that were used for our brand’s design including adobe Photoshop or adobe illustrator brushes, photoshop actions, 300 dpi patterns or textures, or other creative addons One (1) visual moodboard, complementary mockups, and your branding font packages To apply please a few examples of your w...

I need assistance with automating input into a web page using VB.Net (or C# with Visual Studio 2017 or higher). I have a mostly working sample in VB.Net, but I am struggling with automating the entry of an antenna type, which is facilitated by a d...about the need for the automation to handle dynamic web page elements. This will require some assessment or flexibility in the solution. The ideal freelancer for this project should have: - Proficiency in VB.Net or C# with Visual Studio 2017 or higher. - Experience with web page automation. - Knowledge of automating input through dropdown menus on web pages. - Familiarity with Google Chrome, Firefox or Microsoft Edge automation. I would appreciate the project being completed within a month, as I am on a defined timeline for this task. ...

...mix of physical products, digital products, and services. I need to create a system that validates paid memberships pro or memberpress subscriptions using a qr code with a family and frendly interface that verifies from a mobile device and validates it. I want something similar to this but instead of checking events, check if you have an active subscription or not: The QR code must be customised as with this plugin: I need the plugin to create a validation system either by an api or by a system that verifies in real time if the subscription is active or not. The check in interface must provide customer data such as name, surname, photo, registration date, subscription start date, subscription end

I am looking for skilled programmers who have the expertise in converting Excel VBA macro codes into a cloud-based solution that can be run on MS Azure. Key Requirements: - Conversion of Excel VBA macro focusing on data analysis - Development of a scalable and secure MS Azure-based solution Ideal Skills and Experience: - Proficient in Excel VBA and cloud technologies - Experience in migrating Excel VBA macros to cloud-based platforms, especially MS Azure - Strong understanding of data analysis and cloud security - Proven track record in developing scalable cloud solutions

The goal of this project is to optimize Azure Front Door for a content delivery network (CDN) serving primarily static web files: HTML, CSS, and JS. The designed CDN should display seamless compatibility with various browsers, including Google Chrome, Microsoft Edge, and Mozilla Firefox. Key Features Expected: - Efficient Load Balancing - Robust Web Application Firewall (WAF) Top Skills and Experience Required: - Deep expertise in Azure Front Door configurations - Thorough understanding of CDN operations - Familiarity with static web file operations - Proficiency in cross-browser compatibility testing

...found when it was done, Every step says "ok" It is an example for any categories. Error sample Dolibarr: 17.0.4 - Nivel de funciones: 0 PHP: 7.4.3-4ubuntu2.20 Server: Apache/2.4.41 (Ubuntu) OS: Linux ubuntuserver-i-hellbam 5.4.0-174-generic #193-Ubuntu SMP Thu Mar 7 14:29:28 UTC 2024 x86_64 Agente de usuario: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:124.0) Gecko/20100101 Firefox/124.0 URL solicitada: /product/ Referer: Administrador de menús: Módulos/Aplicaciones: syslog, user, export, propal, contrat, expedition, supplier_proposal, loan, margin, product, tax, stock, notification, mailing, projet

Hi Elite Information Tech, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

I am currently in need of a Browser extension expert to help me convert an existing Chrome extension to be compatible with Firefox, Safari, and Opera browsers. In addition to the extension conversion, I'm also seeking proactive debugging of an ongoing issue with the existing logic. The current issue revolves around incorrect functionality, and thus, experience in troubleshooting logic errors will be highly beneficial for this project. Key Responsibilities: - Rectify incorrect functionality in existing logic. - Convert Chrome extension to be compatible with Firefox, Safari, and Opera browsers. Ideal Skills and Experience: - Extensive experience with browser extension development and conversion. - Sound understanding of and troubleshoot logic errors

I require a proficient SEO specialist to optimize my web development service across all major web browsers. These browsers include: - Google Chrome - Mozilla Firefox - Apple Safari - Microsoft Edge - Tor Browser - Opera - Brave The goal of this project is to improve the organic ranking of my service in search engines pertaining to 'Web Development'. Key Responsibilities: - Investigate and perform thorough keyword research related to 'Web Development'. - Execute effective on-page and off-page SEO strategies. - Regularly track, analyze and report the performance. Ideal Skills: - Prior experience in SEO optimization for web development services. - Proficiency in working with various web browsers. - Proven track record of improving organic search ranking. ...

I am looking for a skilled freelancer to set up Appium automation for my Android app. The task involves two main parts: 1. Login process - using either Chrome or Firefox browsers to login into the website. 2. After login, the app needs to be accessed to perform several actions including: - Data Entry - Navigation through different pages or sections - Interaction with various app elements such as buttons, text fields, and dropdown menus. The ideal candidate should have expertise in Appium and automation, with experience in handling browsers on Android and navigating applications. Strong knowledge of interacting with various app elements is a plus.

I'm looking to have someone integrate Widevine DRM (provided by VdoCipher) forcefully into Android browsers. Our website is WordPress. The aim is to ensure this DRM performs effectively on Chrome, Firefox and Safari browsers. - Understanding Widevine DRM and VdoCipher will be crucial for this task. - I do have access to VdoCipher's Widevine DRM API documentation to help guide the project. However, the successful freelancer will need to have prior experience or familiarity with using such essential resources. - I'm uncertain about the availability of pre-existing code related to DRM implementation for this project. So, the freelancer should be prepared to develop solutions from scratch if needed. Ideal skills: - Proficiency in Android browser customization - Soli...

I need an addons that allows me to automatically close all the positions in my account in ninja trader platform, when I reach the total profit, so if for example I have 3-4 currencies in my wallet and I set it to close all the positions when I reach a total of 500 USD or 600 usd , therefore the total sum of all open positions must automatically close the operations once the profit and stop level is reached.

...showcasing high-quality game-ready assets. Proficiency in 3D modeling software such as Maya, or 3ds Max. Solid understanding of character anatomy, creature design, and environmental modeling. Familiarity with texturing techniques and software such as Substance Painter or Photoshop. Ability to work collaboratively in a team environment and communicate effectively with artists, designers, and programmers. Passion for action RPG games and a strong appreciation for the visual style and atmosphere of titles like Diablo 2 and Champions of Titan. Characters and buildings should be based on Diablo 2, but modern style like Champions of Titan. 2 battlefields & 5 main characters, 10 NPC models for this job. Deadline is 2 weeks, but within 1 week, you will be selective. This job is long...

I'm looking for an experienced web developer to convert my existing PDF design to HTML/CSS/JavaScript. I have all the source files ready for you to work with. Key Requirements: - The converted webpage must be fully responsive and adapt aesthetically to different screen sizes. - It needs to be compatible with the Chrome browser initially. However, future projects may involve compatibility with Firefox and Safari. Ideal Skills: - Expertise in HTML/CSS/JS - Experience in responsive design - Familiarity with browser compatibility issues.

...Please do not waste your valuable time trying to do either. You will be testing an educational messaging app, so freelancers with experience in schools / education / academics / software development will have an immediate advantage. The criteria are: 1. Correct flow - Does each screen do what the design intends? 2. Functionality - does everything work ? 3. Browsers - Both on Google Chrome and Firefox, if possible The data you will need to fill in is same as the attached testing report which is from a previous application 1. Error type - Describe the error clearly and also WHICH SCREEN you caught the error (Write down the screen URL next to each error) 2. Severity (Minor/major/critical) 3. Result: What is actually happening in the error 4. Expected: What should have happened...

CRM WebApp Project using framework: We need CRM with Wordpress and elementor and theme, please see the links, read well, before you bide, make your best offer, I will choose the best offer price and deadline Functionalities: Notice task date, hour and how, W or SMS or….. Automatically set date for next task when previous marked as done if we don't set it manually on notice Notice of the task that needs to be done not only the date and hour but also how by W or by Sms or …. So I can even choose tasks or select tasks that need to be done by W or by phone call When we receive answer from client about date when he want the sign, we set task date manually Find an easy way to upload files to the client folder from W, Email, SMS, … CRM app all files, photo...

...should include the logo in various formats (different colors, transparent/vector) suitable for podcast covers, social media, websites, etc. If you're ready to bring creativity and expertise to this project and help empower women through health optimization, I'd love to hear from you! Please showcase your skills and relevant experience in your proposal. Looking forward to collaborating with the best designer for this exciting endeavor! ..................................................................................................................................................................... GUIDANCE FOR CONTEST: *** IMPORTANT ***: I prefer a variety of options for the podcast cover, including both designs WITH AND WITHOUT MY FACE (my face can be found in the...

I'm looking for an experienced animator to create an animated video explaining my product features. I have attached a detailed video outlining my requirements, as well as presentations and content to guide the video creation. The video should be engaging, informative, and tailored to my target audience. I need someone who can demonstrate a str...requirements, as well as presentations and content to guide the video creation. The video should be engaging, informative, and tailored to my target audience. I need someone who can demonstrate a strong understanding of my product and its benefits. Please share examples of your previous animated video work to showcase your style and capabilities. I will carefully review all proposals and select the best fit for my project.

I'm presently encountering an issue on Mozilla Firefox where I receive an error message: "Cookies are blocked due to unexpected output" during a login attempt on my website. This error has begun to appear without any recent changes to the login functionality of my site. The ideal freelancer for this will have: - Expertise in wordpress and debugging - Proficient with Mozilla Firefox specifics - Understanding of cookie functionality and potential issues causing this error The scope will involve diagnosing the issue, providing a resolution and ensuring that the login functionality is working seamlessly post-resolution. The task may require troubleshooting on my website, possibly focusing on the sections of code that handle cookies during the login process.

I'm struggling with the re-positioning of elements within nested HTML divs. My goal is to rearrange these divs in a specific order (see attached image). The revamped layout needs to be fully compatible with all devices and browsers including Google Chrome, Firefox, and Safari. Candidates with expert knowledge of HTML, CSS, and browser compatibility are ideal. Experience with responsive web design is also appreciated, as the intent is to enhance the capability of the layout on different devices.

More details: What is the main goal of your project? Delivering high-quality work Which type of project are you aiming to complete? Graphic design What graphic design services do you need? Logo design

Addons in project , mentioned in pdf below. I am looking for a skilled Flutter developer to assist me in creating an educational app for the Android platform. The primary function of the app will be to provide users with access to educational content. Key requirements: - Develop a fully functional educational app for Android - Integrate a user-friendly and secure discussion forum feature - Ensure the app's design is both visually appealing and user-friendly Skills and experience needed: - Strong experience in Flutter development - Previous experience developing Android applications - Understanding of user interaction design - Ability to implement secure and efficient discussion forum features This is an urgent project, so I am looking for someone who can commit to working ...

...an expert to help me select the most suitable programming language for building various applications, targeting multiple platforms. Key Requirements: - I would like to build applications for iOS, Android, Web, Windows 10, Linux, and MacOS - I am specifically seeking a programming language that offers strong cross-platform development capabilities Q1. I want someone to guide me in selecting the best cross platform programming language for building apps which could run on server (like php) as well as client side on any browser (like javascript). In which we can make desktop apps for windows as well as mac & linux. In which we can make mobile apps for android as well as ios 2. I am very familiar with C & C++. So I would prefer to use similar syntax. 3. I would also like t...

As a music production company, we're seeking for an accomplished music producer who can craft a memorable and energetic pop anthem. The producer's creativity should contribute to our mission of reaching young adults who are our primary demographic. Ideal Skills and Experience: - Decent background in creating pop music - Proven track record of producing catchy and energy-filled beats - Experience in targeting music to a young adult demographic - The ability to understand our musical vision and turn it into a hit - An innovative and dynamic approach to music production Your task is not just crafting a similar piece to the one we already have, it's as much about understanding our needs in the music sphere, so we're looking for someone who's innovative and unique ...

My dad is a very good singer/song writer. He made a new song recorded with guitar. We looking for a producer that can add instrumentale to this song and maybe adjust it a bit. Song is cover of a Spanish song but my dad made dutch and English version. So we need producer with alot of experience.

I require immediate assistance for a web scraping into Excel task. This project focuses on the extraction o...understand and allow me to add new tables in the future. 2. Create a macro that will extract the table from each of the links and into Excel. Because the table statistics change every day, currently, I copy and paste manually, so I want to automate it. 3. The details start from the R - Team row. 4. Compulsory for basketball to extract data in Columns B to J, and for Soccer Columns B to I 5. Only programmers with successful scraping demos will be considered. 6. The fastest who can show me a successful demo will be prioritised. 7. Looking to finish the job over the weekend. 8. All the tables must be refreshed. There is a second project after the successful completion o...

I'm in need of experienced Python programmers who can write a parallel computing project related to bitcoin mining. Your main goal will be to develop an efficient btcoin miner program. A strong understanding of blockchain technology and cryptocurrency development is essential for this project. Ideal Skills: - Expertise in Python - Knowledge of parallel computing - Experience in blockchain technology and cryptocurrency development - Familiarity with bitcoin mining Please provide examples of previous work in these areas when bidding.

I'm looking for a skilled web developer who can help to address some issues I'm facing across multiple browsers. - The errors are appearing in Google Chrome, Mozilla Firefox, and Safari. - These include JavaScript errors, CSS warnings, and network issues. - Specific examples of the JavaScript errors are: undefined variable, null reference error, and syntax errors. The ideal freelancer for this job would be someone with a strong background in web development, particularly in debugging and browser compatibility. Experience in working with cross-browser development issues would be a definite plus.

More details: What style of logo are you looking for? Modern Where will you primarily use your logo? Website, Print Materials, Social Media What are the primary colors you would like to see in your logo? Will let designer decide

I am seeking an experienced professional who is proficient in both Event-B modelling and Spark. If you've worked on similar projects, it would be beneficial. A detailed project proposal showing your approach will be valuable. Apply if you think you can make a significant contribution to this project.

I have an exciting project lined up for skilled Android programmers with experience in open source modification. Specifically, I need modifications on the v2rayng or xray client to support command line execution. Here's what I need: - Feature Addition: Command Line Execution - I need to add mechanisms that support execution of tasks based on my specific commands. e.g. Start command: v2ray start (or ) where will have the vmess:// vless:// ss:// details generated by server Stop command: v2ray stop - Native support of tun2socks - Scripting: Shell Script Compatibility - This application should permit scripts to be run from the command line. This requires your android development skills to be coupled with a good understanding of shell scripting. The

Our mission is to locate a seasoned and experienced Custom House Agent who would expertly tackle my needs in Import documentation, Export documentation, and Customs Clearance. In this role, the agent would handle the logistics relating to Electronics, Couple Games and other items primarily. This role would demand rapid completion but will allow for diligence and attention to detail. The ideal fit would be an individual or organization boasting significant experience in the field, familiar with the intricate laws of customs, and a strong track record of successful clearances. If this sounds like you, feel free to bid. On successful completion of few initial projects, we can certainly look forward to a long-term partnership.

I'm seeking an experienced automation expert proficient in Playwright and Cucumber to implement automation tasks. Skills you should display: - Experienced in Playwright and Cucumber - Familiarity with Chrome, Firefox, and Safari browsers - Proven background in web automation Given the breadth of the project, your application should include: - Evidence of past work in this domain. The more closely your past projects align with my needs, the better. - If possible, specific examples of web automation scenarios you have previously dealt with similar to mine. Gauge your understanding of the project based on these details and showcase how your skills align with this task in your proposal. Looking forward to a fruitful collaboration!

Looking for programmers in a team to develop a crypto project "Dust Fighter". Skills: - Understanding of blockchain and crypto - Web3.js. - Communication and hard work ethic To submit a resume you need to familiarize yourself with the project, download the game and answer questions about the game - Example answer submission: - Experience in web3 development - What programming languages do you know - What are the highlights of the game that you liked? - What would you add to the game for more gameplay retention? - How hard is it to change the ranking system and display it all on the site? - If you find a bug in the game it would be a big plus, be sure to write us about it! Our social networks:

I require a proficient ReactJS developer to transform my existing Figma design into a responsive and browser-friendly site. Key Requirements: - Translate my complete Figma designs into ReactJS - Ensure the finalized site is fully responsive and adaptable to all screen sizes - The site must be compatible with Google Chrome, Mozilla Firefox, and Internet Explorer Qualified candidates should have: - Proven experience in ReactJS development - Familiarity with Figma - Strong understanding of responsive web design - Comprehensive browser compatibility knowledge