Web Standards

Hi everyone, This coffee morning event is @ **Château Moderne**, on Saturday, is 28 February 2026, from 10:00 - 13:00. **Château Moderne will be changing its name to Radio Moderne!** 1. The **prime time** of the event is **10:30 - 12:30**. That's when most people will be there. 2. When you enter the place, you will see a long table that is set up for the event. 3. If you intend **to join past 12:00** (high noon), then there is no need to register. Just come and join! 4. **DON'T forget to cancel** if you can't join! 5. **Please, be respectful towards each other during the event. (And after ;))** **As always, feel free to follow us on INSTAGRAM!** https://instagram.com/weekendmorningcoffee?igshid=OGQ5ZDc2ODk2ZA== *** **THE STRUCTURE of THE EVENT:** * I post the event on Saturday/Sunday for the following Saturday. * I send out a reminder as an email or a comment on the event page on Thursday/Friday. * There is sometimes a waiting list. * **For everyone on the waiting,** please check your status and messages on Friday evening the latest. I message everyone on the waiting list on Friday. * **Please, move to "not going" AS SOON AS you know that you can't come anymore, that includes everyone who is on the waiting list.** **IMPORTANT:** * When you register yourself, be careful not to register accidentally a +1 guest (unless you bring a guest). It happens very often. * If you have any questions then, message me. *** **A MESSAGE FOR NEWCOMERS:** *In the three years of hosting this coffee group, I have met many people who struggle with anxieties when coming to an event for the first time. Sometimes, it took them more than one attempt before being able to join.* *Occasionally, people reach out to me before the event, and I have always been grateful for that as it offers the opportunity to communicate with each other and to find the best and most gentle way for that person to join the group.* *I would like to encourage everyone who struggles with this to contact me before. It would really be too bad if you can't join us, as it mostly gets better the second or third time you come.* *In addition to that, if you arrive and notice any signs of nervousness or fear, you can always let me know right then.* **THANK YOU AND SEE YOU ALL ON SATURDAY!** **LOCATION:** Château Moderne Mont des Arts 1 1000 Bruxelles

COMEDY CONNECT: The only place in Belgium where your vote matters! 🗓️ February 28th at 20.00 📍 The Sisters Cafè (Just behind Grand Place) 🎟️ [Use the promo code CONNECT and get a ticket for only 7 euros!](https://www.eventbrite.be/e/comedy-connect-vol-7-an-interactive-english-comedy-show-february-28th-tickets-1980316124838?aff=oddtdtcreator) With the help of 4 incredible comedians, we will try to solve the important questions in life, like: Is it normal to wear socks in bed? Is dating your ex-partner a good idea? What is Brussels’ problem? The weather or the people? And much more! **MCs of the night:** Alyce Sevink Michele Marini

_IMPORTANT: To RSVP you will also need to register as a member [here.](https://www.sundayvacations.com/membership)_ Join Sunday Vacations for a cozy Saturday brunch at **Aksum Coffee House**, one of Brussels’ most beautiful cafés, where rich Ethiopian coffee, fresh Moroccan crêpes, and vibrant international vibes meet in perfect harmony. This is more than just brunch, it’s a relaxed way to start your weekend, meet new people, and enjoy a soulful spot full of stories and flavors. ### 📍 Where? **Aksum Coffee House – Galeries Sainte Hubert (Just a few steps from Grand Place) ### 🕚 When? **Saturday at 11:30 AM** Come hungry, curious, and ready to mingle! ### 🍽️ What’s on the menu? ☕ Fresh-roasted Ethiopian coffee 🥞 Moroccan-style crêpes & artisan pastries 🥚 Tasty brunch dishes (vegetarian options too) 🧾 Everyone pays their own order at the counter. ### 👋 Who’s joining? Expect a mix of international professionals, friendly locals, and Sunday Vacations regulars. Solo? New in town? Come anyway, this is the perfect place to connect. --- 🧡 **Limited spots** – RSVP early to secure your place at the table. By joining this event, you agree to the Sunday Vacations [Terms & Conditions](https://www.sundayvacations.com/terms), [Privacy Policy](https://www.sundayvacations.com/privacy) & [Code of Conduct](https://www.sundayvacations.com/code)

**28th February Nude Art Class – Drawing and/or Painting – Grand Hospice** Welcome to the sixth session of the nude drawing and painting classes, which will take place at Grand Hospice, in Brussels city centre, until June 2026! When: Saturday 28th February, **1.45 - 4.30 pm**. The class will focus on drawing and painting the human figure, using both previously seen and new live models. We will continue studying the human figure, in a relaxed and friendly atmosphere, with multiple poses and different posing times, and objects integrated in the composition. Whether you're an experienced artist or just starting, this art class is open to all skill levels! Two tickets possible: only with **drawing material**, or **drawing + painting** material. Limited "**pay 1 get 2"** tickets have been added: get them quickly! Please book via **this Eventbrite link**. Only Eventbrite tickets will count as participation, due to limited capacity: https://www.eventbrite.ca/e/28th-february-nude-art-class-drawing-andor-painting-grand-hospice-tickets-1982894676355?aff=oddtdtcreator&_gl=1%2Axvawsq%2A_up%2AMQ..%2A_ga%2ANjA3MDgxMTY3LjE3NzA4MzM1MzU.%2A_ga_TQVES5V6SH%2AczE3NzA4MzM1MzQkbzEkZzEkdDE3NzA4MzM1NTIkajQyJGwwJGgw Where: **Jardin Hospice**, **Rue du Grand Hospice 7**, 1000 **Bruxelles**. Meeting point: at the **main door** of Jardin Hospice, **at 1.45 pm**. The group will be guided upstairs. **The session will start at 2 pm o'clock**. If late, please contact Elio via WhatsApp: **+39 324 62 17 652**, in order to allow the other participants to start on time. Last but not least: here are all dates for the season, until June 2026, on Saturday, 13.45 – 4.30 pm: **28 Mar** – **25 Apr** – **30 May** – **27 June** Refreshments and finger food provided as usual. See you there!

**HATSUGAMA - Tea ceremony for the new year 2026** The tea ceremony for the new year will be held in SAIAN tea ceremony room. Please taste the first bowl of the fresh light matcha【Usucha】2026 with Japanese sweets from Kyoto! details: http://www.saikoproject.com/SAIAN/SAIANsession/happy2026.html * **Date and Time** - \* 20-30 min, max 4 persons per session * **Sat** **28 Feb**: 13:00 or 14:30 or 16:00 * * **Fee** (all costs included, booking and advance payment)- 18 euro/pers * * **Booking** - Please send \- the date and time of your choice \- your name \- your phone number \- if more than one person\, the number of persons to: saianansyu@gmail.com

. Find us on Facebook to see what's actually happening. Bring your own knitting or crochet project and join other people who enjoy yarn crafts for a relaxing couple of hours on Saturday afternoons. The 1st Saturday of the month is not an in-person meet-up, but on zoom. All people and all levels welcome, including beginners, whom we are happy to help get started (although we don't run classes). No charge. All you need is some yarn and a crochet hook or a pair of knitting needles. We are very friendly so don't be shy. The venue may change from time to time so please check back on the day before the event to be sure you have it right. We mostly speak English, but people in the group are very international and speak many languages. Looking forward to seeing you.

**HATSUGAMA - Tea ceremony for the new year 2026** The tea ceremony for the new year will be held in SAIAN tea ceremony room. Please taste the first bowl of the fresh light matcha【Usucha】2026 with Japanese sweets from Kyoto! details: http://www.saikoproject.com/SAIAN/SAIANsession/happy2026.html * **Date and Time** - \* 20-30 min, max 4 persons per session * **Sat** **28 Feb**: 14:30 (1 place left) or 16:00(2 places left) * * **Fee** (all costs included, booking and advance payment)- 18 euro/pers * * **Booking** - Please send \- the date and time of your choice \- your name \- your phone number \- if more than one person\, the number of persons to: saianansyu@gmail.com

**PLEASE READ THE ATTENDANCE POLICY (below) IF IT'S YOUR FIRST TIME** **SUNDAY COFFEE & JAPANESE CONVERSATION** 日曜日のコーヒー＆日本語会話 Our "Japanese/English Conversation Exchange" offers you a unique opportunity to immerse yourself in the world of Japanese culture and language, all while helping native Japanese members to learn their target language. 私たちの「日本語/英語会話交流」は、日本の文化と言語の世界に没頭しながら、ネイティブの日本人メンバーが英語、フランス語、またはオランダ語を学ぶのを手助けするユニークな機会を提供します。 **Date: /** 日付：**(almost) every Sunday** **Time: /** 時間：**from 4.00 pm to 6.00 pm** **Location: /** 場所：**Cafe Caberdouche - Place de la Liberté 8, 1000 Bruxelles** **Venue Note: /** 会場の注意：**The manager of the cafe kindly accepted us to book a table on a regular basis. To thank him for his kindness, please order AT LEAST ONE DRINK**. カフェのマネージャーが親切にも私たちに定期的にテーブルを予約することを承諾してくださいました。その親切に感謝の意を示すために、少なくとも1杯のドリンクを注文してください。 **Location Assistance: /** 場所の案内：**If you can't find us, ask one of the waiters. They know where we are :) You can also send us a message.** 私たちを見つけられない場合は、ウェイターの一人に尋ねてください。彼らは私たちがどこにいるか知っています :) メッセージも送っていただけます。 **Event Agenda: /** イベントのアジェンダ： * **4:00 PM - 6:00 PM: JAPANESE CONVERSATION** \- Join us for the Japanese conversation and cultural exploration\. Beginners are welcome / 日本語会話 \- 最初の30分は日本語の会話と文化探求に充てられています。初心者も聞くだけでも歓迎です。30分後に参加しても構いません。多言語交換 \- ベルギーの多様性を体験し、ネイティブの日本人メンバーが英語、フランス語、またはオランダ語を学びたいと熱心に待っています。さまざまな言語で異文化交流の会話に参加しましょう。私たちの日本の友人にベルギーの文化、伝統、生活を紹介しましょう。 * **6:00 PM: EVENT CONCLUSION** \- Please respect the event's start and end times to maximize your language exchange opportunities\. Your participation and enthusiasm are appreciated\! イベントの終了 \- イベントの開始時間と終了時間を尊重して、言語交換の機会を最大限に活用してください。参加と熱意に感謝します！ **Attendance Policy: --->** 以下の日本語 * We're excited to have you join our events and appreciate your commitment to learning and growing together. To ensure a productive and enjoyable experience for all participants, please take note of our attendance policy: 1. **Punctuality:** Please arrive on time for scheduled events. Late arrivals can disrupt the flow of the event and may miss important information. 2. **Language Commitment:** If you sign up for language-specific sessions, such as Japanese conversation or language exchange, we kindly request your commitment to actively participate in that language for the designated duration. 3. **Respect:** Treat fellow participants, organizers, and cafe staff with respect and courtesy. Harassment or disruptive behavior will not be tolerated. 4. **Removal Policy:** A participant who is not respectful towards other members will be removed from the group and blocked, with no warning. This point is not negotiable. 5. **Cancellation:** If you are unable to attend an event you've registered for, please let us know as soon as possible. This helps us plan accordingly and allows others to take your place if there's a waitlist. 6. **No-Show Policy:** Three no-shows (failing to attend without prior notice) may result in restrictions on event registration to ensure fairness to other participants. By attending our events, you agree to adhere to these guidelines. We aim to create a welcoming and inclusive environment where everyone can learn and connect. Thank you for being part of our community! **出席ポリシー：** 私たちは、イベントに参加していただけることを楽しみにしており、皆さんが一緒に学び成長することに取り組んでいただけることを感謝しています。すべての参加者が生産的で楽しい経験をするために、出席ポリシーにご留意ください： 1. 時間厳守：予定されたイベントには時間通りにお越しください。遅刻はイベントの流れを乱し、重要な情報を見逃す可能性があります。日本語のみのセッションは午後4時、全言語のセッションは午後4時30分開始です。 2. 言語へのコミットメント：日本語会話や言語交換など、特定の言語のセッションに登録された場合は、その言語での積極的な参加をお願いします。 3. 尊重：他の参加者、主催者、カフェのスタッフには敬意と礼儀をもって接してください。嫌がらせや迷惑行為は許容されません。 4. 退場ポリシー：他のメンバーに対して敬意を持たない参加者は、警告なしにグループから削除され、ブロックされます。このポイントは交渉の余地がありません。 5. キャンセル：登録したイベントに参加できない場合は、できるだけ早くお知らせください。これにより、他の人があなたの代わりを取ることができます。 6. ノーショーポリシー：事前の通知なしに3回のノーショー（欠席）がある場合は、他の参加者に公平になるようイベントの登録に制限がかかる場合があります。 私たちのイベントに参加することで、これらのガイドラインに従うことに同意するものとします。私たちはみなさんが学び、つながることができるように歓迎される包括的な環境を作り出すことを目指しています。コミュニティの一部としてご参加いただき、ありがとうございます！ **Note: Please stay tuned to our event page for updates and schedule changes. We can't wait to see you there and exchange languages, cultures, and stories!** 備考：更新やスケジュールの変更については、イベントページをご覧ください。そこで皆さんにお会いして、言語や文化、物語を交換できるのを楽しみにしています！

⚠️ **IMPORTANT: You must sign up and buy a ticket here to attend:** [https://groupvibe.com/](https://groupvibe.com/) **This is a curated, small-group meetup make new friends in Brussels.** Each meetup brings together 4–6 like-minded people for casual conversations over brunch. We use the Groupvibe platform to organize and ensure everyone’s a good fit. 👉 **To attend, you’ll need to complete registration via this link:** [https://groupvibe.com](https://groupvibe.com) Once you register, and **buy a ticket or become a Groupvibe member**, we’ll share the exact location and match you with your group. **Why this works:** \* Smaller groups make real conversations easier \* Matching helps avoid awkward dynamics **Note:** RSVPs here on Meetup don’t reflect total attendance. Many attendees register directly via our website. This meetup is organized by **Groupvibe**, a small team passionate about helping people form meaningful friendships offline.

Let's continue the tradition and play UNO, everybody is welcome :) If you're on the waitlist please check your messages, especially on Sunday. If people drop off last minute I tend to message people on the waitlist to see who can come. We'll be playing at the lobby of Radisson RED, Brussels. The address of the hotel is: Rue d'Idalie 35, 1050 Bruxelles My number is 0471 45 55 02. Feel free to call if you cannot solve a physics question, cannot find the place or simply need a hug. I have quickly written a set of rules on how we play. It is assumed that the reader has a basic concept of the game. *** Setup: * Each player starts with 6 or 7 cards each (depending on total number of players) * A card is shown in play in the middle of everyone, this is known as the top card. Goal: * The goal of the game for each player is to get rid of all cards in your hand Rules: * Whenever you go from two cards to one card, you have to say "UNO". * Each player takes his turn one by one, initially going in the clock-wise direction * A card may be played if it matches the same colour or same number or same type as the top card in play * The two black cards (Draw 4 and Wild) can be played regardless of the top card in play. * Interruption rule: You may interrupt the general flow of the game (clockwise or counter-clockwise) if you have the EXACT same card as the top card in play. If you manage to play the card prior to the person whose turn it's supposed to be, then the game continues on from you in the same direction it was previously. (Unless the reverse card was interrupted, then the direction changes). * Draw2 or Draw4 cards can be played in accordance to the interruption rule. The following person after the interrupt has to take the accumulated number of cards. If however, cards have already been drawn AND seen by the person who was supposed to take the cards, then only the remainder of cards has to be drawn. * Once someone has no cards remaining in his hand, play stops and we start counting points. Points: * Number cards have the face value as the number of points. i.e. number 6 is worth 6 points, number 0 is worth 0 points, number 4 is worth 4 points. * Skip, reverse and Draw2 are worth 20 points each * Wild and draw4 are worth 50 points each

🌱 This March 1st, welcome the start of spring with a cozy, creative morning at Sunday Craft Club! 🎨 Paint your own plant pot and make it colourful and unique as a little reminder of the season’s fresh beginnings. ☕ And yes… coffee is included (or any other drink you prefer)! Enjoy your warm cup while you paint, chat, unwind, and let your creativity bloom. By the end of the session, you’ll head home with your decorated pot, some new friends, and a little bit of spring magic to brighten your home. 💛 Paint, plant & sip — a relaxed morning creative session with a drink of your choice included, all for €15. 📍 **MIR Concept Coffee Store** 📅 **Sunday, March 1st — 10:00–12:00** 🌼 **Beginner‑friendly** (no experience needed) 💶 **€15 per person** *(includes all materials + a drink of your choice, and helps cover the Meetup page costs so we can keep hosting these sessions)*

**About the session** This is a curated mixed doubles of Intermediate and Advanced levels. It’s an invitational group, no beginners or casual/amateur play. We balance courts for pace and quality. New and Interested in being part of our group? Join here, https://chat.whatsapp.com/KqdVhyuBhFz1d56lv4WVVi Please Direct Message the Organizer with your level. Approval is required before your first RSVP. **Format & level** * Competitive mixed doubles match play with quick rotations * Self-umpired with rally scoring to 21. * We may adjust pairings to keep games balanced. **Shuttles** We provide Yonex Mavis 2000 (Medium, Yellow) match-grade nylon shuttles. Please don’t mix in other shuttles during games. **Other Info** * We’ll post exact court numbers in the WhatsApp group before each session. Check on the day. * To secure your spot, RSVP on Meetup and complete payment by thursday evening (RSVP deadline). Unpaid RSVPs may be moved to the Waitlist so we can release/adjust courts fairly. * Waitlist: If enabled, members may be promoted automatically as spots open. So check regularly for the latest update. **House rules** * Shoes: Clean, non-marking indoor shoes only. * Timing: Arrive 10 minutes early for warm-up and court assignment. Running late? DM the Organizer. * Etiquette: Call lines fairly, rotate quickly, and mind court boundaries. No Aggressive language. * Gear: Bring your racket, water, and a towel. shuttles are provided. **Contact** Questions or first-time approval requests? DM the Organizer with your playing level and availability.

Let's meet to write ! Schedule : 11:00 - 11:30 am : Presentation tour. Share briefly with the group about your project and your "goal of the day". 11:30 - 13:30 : Let's write ! 13:30 : Conclusion tour. Did you achieve your goal of the day ? See you soon !

A relaxed walk. No pressure: you can chat, stay quiet, or simply enjoy the walk. Une balade tranquille. Pas de pression : tu peux parler, rester silencieux·se ou juste profiter de la marche.

**TBA**

**PLEASE READ THE FOLLOWING IMPORTANT NOTES:** 1. The dates for this series are simply placeholders at the moment. We are working on our 2026 schedule, and adjustments are forthcoming. 2. Each class in this series has an attendance fee. 3. Each class from BOTH a sign-up and fee perspective is a separate entity. **Introduction:** Our Page Building with Bricks web development class provides detailed instruction for using Bricks Builder, a visual site builder for WordPress, to create and manage websites. Widely considered by many of the world's leading web developers to be the most complete page builder on the market today, Bricks Builder offers a wide range of features and comprehensive tools. Our Bricks Builder web development class provides detailed instructions on utilizing the toolset. The series of courses covers the core features of Bricks Builder, enabling users to design and develop responsive, visually appealing websites. Moreover, the courses are oriented to reinforce a focus on professional, scalable web development. Throughout the series, we focus our page-building instruction on the semantic and structural integrity of the pages in a responsive world. By the end of the 10-class series, participants will have a fundamental understanding of proper web page and website development. **The breakdown of the 10-class series is as follows:** * Class 01 - Survey of Page Builders / What Bricksbuilder Does For You * Class 02 - Boxes, Boxes, Boxes / Sections / Containers * Class 03 - Static Units / Relative Units / Responsive Development And Math Functions * Class 04 - CSS Variables And DRY Development / Classes And Global Styling * Class 05 - CSS Grid And CSS Flexbox * Class 06 - Responsive Development / Breakpoints And Media Queries * Class 07 - Effective Use Of Color / Effective Use Of Images * Class 08 - Beginning To Think Dynamically / Using Templates And Components * Class 09 - Dynamic Styling / Data Attributes And Attribute Selectors * Class 10 - Pseudo Elements / Programmatically Styling With Pseudo Classes Throughout the class sessions listed above, we cover the following key areas of web development with Bricks Builder: * **Introduction to Bricks Builder Interface:** * Familiarization with the builder's layout, including the toolbar, panel, and canvas, and understanding how to navigate and interact with its various components. * **Visual Site Building:** * Techniques for creating layouts using Bricks' drag-and-drop interface, incorporating sections, rows, columns, and elements to build page structures. * **Styling and Design:** * Utilizing Bricks' styling options to customize elements, apply global CSS classes for consistent design, and leverage features like Flexbox and CSS Grid for responsive layouts. * **Dynamic Content and Custom Fields:** * Integrating dynamic content from custom post types and custom field plugins (like ACF, Meta Box) to build data-driven websites. * **Template Building:** * Creating and managing reusable templates for headers, footers, post type layouts, and other site-wide elements. * **Performance Optimization:** * Understanding how Bricks Builder contributes to fast-loading websites and implementing performance best practices. * **Advanced Features:** * Depending on the class level, it might delve into advanced topics such as conditional logic, interactions, and custom code integration to enable more complex functionality. The series aims to equip participants with the skills to efficiently build, customize, and maintain WordPress websites using Bricks Builder, catering to both beginners and experienced web developers.

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you! **What to Expect at the Intro Circle** \~\~\~\~\~\~\~\~\~\~\~\~\~ Near the beginning of the event (1:30 pm), we do a standup: * Organizer announcements, updates, and logistics Round 1 - (7 secs max): * Your name * What you're working on * What you can help others with Round 2: * Community events you wanna plug. If none, that's cool too. Round 3: * Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool. After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!

**Web Design Decoded: Tools, Practices, and Proven Processes:** **Semantic HTML** At WebDev Columbus, we are exploring some of the most important topics of professional high-end web design and page building. Primarily focused on site building in the WordPress environment, our group explores tools, tips, and techniques for building the best WordPress sites possible. Additionally, we focus on disciplines and technologies that take website design from visually appealing to optimized spaces for delivering you and/or your client's message effectively and with a nod towards extended reach. Each session combines practical demonstrations with real-world insights, giving you actionable knowledge you can apply immediately. Whether you're a seasoned developer looking to enhance your design skills or a newcomer wanting to understand design best practices, this series offers valuable insights for every skill level. **What to expect:** * Hands-on demonstrations of popular design tools * Best practices for design-to-development workflows * Tips for creating responsive, accessible designs * Real-world problem-solving scenarios * Interactive Q&A sessions * Networking opportunities with fellow developers **Each meetup features:** 60 minutes of focused presentation 30 minutes of live demonstrations 30 minutes for questions and discussion **See you there!** Our casual, collaborative environment encourages learning from both presenters and fellow attendees. Bring your questions, share your experiences, and connect with Central Ohio's web development community! **Stay tuned for specific session topics and dates.**

**Google Analytics Alternatives** Is it finally time to make the switch away from Google Analytics? Two-and-a-half years ago Jason Packer asked this question at Columbus Web Analytics Wednesday. Since then: Google’s Universal Analytics has been sunset, we’ve changed our name to Columbus Data & Analytics Wednesday, and Jason has released two editions of his book “Google Analytics Alternatives”. Fresh off the release of the 2nd edition of his book, we thought it was time to re-open this conversation. While people love to complain about it, GA’s market share has remained relatively constant (at least in the United States). Why is that? You won’t find any complaints about GA4 in this talk, but rather an overview of what’s currently available in the market and how to frame your decision-making process. We’ll also be giving out some free copies of Jason’s book! So even if you’ve got a “GA4Lyfe” tattoo (no judgement), there’s free books to go with the free pizza and beer. Thanks to our 2026 sponsors: [Clarivoy](https://www.clarivoy.com), [What Box Consulting Group](https://www.whatboxconsultinggroup.com), [Conductrics](https://www.conductrics.com), and [Piwik PRO](https://piwik.pro) More info at [cbusdaw.com](https://cbusdaw.com)

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.