Webmasters and content providers began optimizing websites for search engines in the mid-1990s, as the first search engines were cataloging the early Web. Initially, all webmasters needed only to submit the address of a page, or URL, to the various engines which would send a "spider" to "crawl" that page, extract links to other pages from it, and return information found on the page to be indexed.[5] The process involves a search engine spider downloading a page and storing it on the search engine's own server. A second program, known as an indexer, extracts information about the page, such as the words it contains, where they are located, and any weight for specific words, as well as all links the page contains. All of this information is then placed into a scheduler for crawling at a later date.
Online businesses working on improving their SEO can positively impact rankings with on-page optimizations and off-page efforts. Paid search results can be more directly affected, but are still subject to algorithmic ranking factors such as quality score. Higher organic search rankings often enable ecommerce stores to lower their advertising spend, effectively balancing out their SEM visibility. Though hiring an in-house or freelance SEO specialist can seem expensive, the ROI can be significantly greater than continuously paying for PPC ads.
But while you’re maintaining the fun level on set, remain vigilant. It’s your job to pay attention to the little things, like making sure all of the mics are on or noticing if the lighting changes. Record each section many times and have your talent play with inflections. When you think they’ve nailed the shot … get just one more. At this point, your talent is already on a roll, and options will help tremendously during editing.

Copyright 2019 Search Engine Projects | All Rights Reserved | Privacy Policy | Web Site Design | Search Engine Optimization | Social Media Marketing | Reputation Management | Web Analytics | Website Usability | Search Engine Marketing | Localization | Address: 5590 Vista Del Dia, Anaheim, CA 92807 Tel: (888) 669-6961| 2372 Morse Avenue, Suite 566, Irvine, CA 92614 Tel: (866) 997-2929 | 9663 Santa Monica Blvd #841, Beverly Hills, CA 90210 Tel: (888) 733-9535
Maintenance. Ongoing addition and modification of keywords and website con­tent are necessary to continually improve search engine rankings so growth doesn’t stall or decline from neglect. You also want to review your link strategy and ensure that your inbound and outbound links are relevant to your business. A blog can provide you the necessary structure and ease of content addition that you need. Your hosting company can typically help you with the setup/installation of a blog.
Search Engine Marketing or SEM encompasses the steps taken to increase relevant traffic to your website, through higher rankings on search engines. Traditional SEM is made up of two processes: “organic” search engine optimization (SEO) and pay-per-click advertising (PPC) (or cost-per-click (CPC)). However, the field of SEM is a changing and expanding field thanks to constant new developments, such as:

Thanks to its viral nature, simple accessibility and built-in value, video marketing stands out as a smart way to approach content marketing in 2017 and beyond. Video marketing is an incredible way to create content that is personal and has a real impact on your audience. It has an incomparable ability to create emotion driven sales – and sales are always personal on some level. Buyers want to feel good about their choice, and video marketing, when done correctly, is the best way to create this feeling.


There are a number of ways brands can use digital marketing to benefit their marketing efforts. The use of digital marketing in the digital era not only allows for brands to market their products and services, but also allows for online customer support through 24/7 services to make customers feel supported and valued. The use of social media interaction allows brands to receive both positive and negative feedback from their customers as well as determining what media platforms work well for them. As such, digital marketing has become an increased advantage for brands and businesses. It is now common for consumers to post feedback online through social media sources, blogs and websites on their experience with a product or brand.[25] It has become increasingly popular for businesses to use and encourage these conversations through their social media channels to have direct contact with the customers and manage the feedback they receive appropriately.
Extras are unique to your needs — you might benefit from behind-the-scenes footage, a quick photo session, or certain types of b-roll. Get it done! Any content you can create on set during production will only benefit you. It can add more long term value to your clients and give you more content to post. If you work with an agency, ask them what they can do. You might even ask for raw video footage so you can continue editing and repackaging your video for future use. Think about your needs and see what you can do!
The program even provides helpful templates that simplify the editing process. The platform supports high-quality clips like 4K video footage and makes it easy to share your work directly to a video hosting platform. Limited access to advanced color correction and editing features mean it isn’t commonly used by professionals, but iMovie is still a great option if you’re just starting out.
A custom YouTube end card or end screen is a graphic that appears near the end of a video. The graphic includes a clickable call to action. Many people use end cards to increase email newsletter subscriptions, promote resources or highlight other YouTube videos. You can only use end cards if you are in the YouTube Partner Program, on videos of 25 seconds or longer. Consider hiring someone to create a custom end card graphic to capture viewers’ attention.
Jim Boykin blows my mind every time I talk to him. I have been doing SEO for 15 years and yet I am amazed at the deep stuff Jim comes up with. Simply amazing insights and always on the cutting edge. He cuts through the BS and tells you what really works and what doesn't. After our chat, I grabbed my main SEO guy and took him to lunch and said "you have to help me process all this new info..." I was literally pacing around the room...I have so many new ideas to experiment with that I would never have stumbled onto on my own. He is the Michael Jordan or the Jerry Garcia of links...Hope to go to NY again to Jim's amazing SEO classes. Thanks Jim! Michael G.
Going into network marketing? Understand that if you're not close to the top of the food chain there, your ability to generate any serious amount of income will be limited. Be wary of the hype and the sales pitches that get you thinking that it's going to work the other way. Simply understand that you're going to have to work hard no matter what you pick to do. Email marketing? Sure. You can do that. But you'll need a massive and very targeted list to make any dent.
SEO may generate an adequate return on investment. However, search engines are not paid for organic search traffic, their algorithms change, and there are no guarantees of continued referrals. Due to this lack of guarantees and certainty, a business that relies heavily on search engine traffic can suffer major losses if the search engines stop sending visitors.[59] Search engines can change their algorithms, impacting a website's placement, possibly resulting in a serious loss of traffic. According to Google's CEO, Eric Schmidt, in 2010, Google made over 500 algorithm changes – almost 1.5 per day.[60] It is considered wise business practice for website operators to liberate themselves from dependence on search engine traffic.[61] In addition to accessibility in terms of web crawlers (addressed above), user web accessibility has become increasingly important for SEO.
However, while bidding $1,000 on every keyword and ranking #1 for every relevant search sounds nice in theory, most businesses have to play a balancing game between ranking higher and paying too much for clicks. After all, if it costs $17.56 to rank in position #1, but you can only afford to pay $5.00 per click, bidding $1,000 on a keyword to guarantee yourself the #1 position would be a great way to bid yourself out of business.
This year, for the first time, Google stated that user experience would be a core part of gaining rankings for mobile websites. A poorer user experience would send your site hurtling down the rankings. This appeared to come as a shock to many in the SEO community and despite assurances that content was still king – many seemed to feel that this ...
After you’ve determined the type of music you need, it’s time to start analyzing potential songs. Consider the song’s pacing. Songs with a steady rhythm are easy to change to suit your video style. Hoping to include your favorite, Top 40 hit? Popular, radio songs are usually structured in 4-5 parts and can be difficult to transition. Try to choose simple songs that are easy to loop. If you’re looking for an instrumental song, be sure to find something that was recorded with real instruments. Songs made with digital samples can make your video feel unprofessional and out of date.
Pay a SEO consultant to do a regular evaluation of your website. SEO is a continuously progressing science. Every time a search engine changes its algorithm, a SEO professional changes their SEO advice. There are hundreds of things you can do to help SEO ranking. What is practical for your business depends upon the website, the products and the keywords you use.

SEO techniques can be classified into two broad categories: techniques that search engine companies recommend as part of good design ("white hat"), and those techniques of which search engines do not approve ("black hat"). The search engines attempt to minimize the effect of the latter, among them spamdexing. Industry commentators have classified these methods, and the practitioners who employ them, as either white hat SEO, or black hat SEO.[48] White hats tend to produce results that last a long time, whereas black hats anticipate that their sites may eventually be banned either temporarily or permanently once the search engines discover what they are doing.[49]


Over the last 15 years, TopSpot has grown into the largest independent search marketing agency in Houston, Texas due to our passion for helping our clients grow. We understand that your website is often the face of your company and should make you look your best. We create digital strategies that help you reach your business goals & showcase who you really are. SEO, PPC, web design & development and analytics solutions are services we provide, but that's only the beginning. 
Our digital agency offers both traditional targeted online display advertising as well as behavioral retargeting. Through an intense discovery process, our team will determine the most optimal marketing mix for your online media plan. We will leverage ad network partnerships for planning the ideal media buys and negotiating the best possible pricing.

Earned distribution, like owned, is free. You have relatively little to lose using it other than time and effort, but unlike owned and paid, the payoff can be drastically more unpredictable. From SEO efforts that boost your search presence, to building relationships with influencers you’ve never met, you never quite know what your ROI will be — it can be enormous or it can fizzle to an end. But don’t skip earned distribution altogether! Take a little more time to think strategically about which earned channels will help you accomplish your video goals.
In order to do all that, you will need to acquire and apply knowledge in human psychology. If you understand how your customers think, you can design for their needs. This course is based on tried and tested psychological techniques that bring together content and design so as to deliver hands-on advice for how to improve your web design and increase your customer engagement.
There’s a lot leading up to this day, but what a day! Production dayExtended Article7 Must-Know Tips for Production Day FilmingIt’s production day! All your planning and creative brainstorming have led to this. Whether you’re handling production yourself or have hired a team to… Read More can be crazy and hectic, or totally cool and organized. It’s when you finally see your video come to life for the first time — there’s a definite feeling of accomplishment. Exciting as it may be, there’s still a lot to do to ensure your video is the best it can be.
With 360° videos, viewers “scroll” around to see content from every angle — as if they were physically standing within the content. This spherical video style allows viewers to experience a location or event, such as exploring Antarctica or meeting a hammerhead shark. VR allows viewers to navigate and control their experience. These videos are usually viewed through devices such as Oculus Rift or Google Cardboard.
Submit website to directories (limited use). Professional search marketers don’t sub­mit the URL to the major search engines, but it’s possible to do so. A better and faster way is to get links back to your site naturally. Links get your site indexed by the search engines. However, you should submit your URL to directories such as Yahoo! (paid), Business.com (paid) and DMOZ (free). Some may choose to include AdSense (google.com/adsense) scripts on a new site to get their Google Media bot to visit. It will likely get your pages indexed quickly.

Customer testimonials are usually between 30 seconds and two minutes long and can focus on one happy customer or numerous. These videos are highly versatile, meaning you can publish them almost anywhere. You’ll just want to make sure whoever you film is wholly authentic — a forced or fake-feeling testimonial could be more detrimental to your brand, so take some time to find the perfect person.
Hi, thanks for a great blog. In our office we have a debate going on about whether all of this video hype that we’re experiencing from basically everywhere today is really just, well, a hype.. In line with more and more companies using video marketing, text as we know it might fade out, pictures as we know them might fade out, but if everybody starts using video, what will then happen? Today, video is commonly seen as a way to stand out and capture users’ attention, but what if every brand start publishing video solely? Will we still want to see as much video? Will we need to capture the viewers’ attention in 2 seconds instead of 10? What do you think it requires for companies to succeed with videos and stay on top if everybody else is doing the same?
Deciding what story you want your video to tell can be the most fun and the most difficult part. You’ll want to outline the following four elements, which serve as theExtended ArticleHow Thoughtful Video Storytelling Can Give Your Business a Competitive AdvantageWhen you think about storytelling, you probably think about fairy tales and bedtime as a child. But storytelling can be so much more! It’s… Read More basic framework of your story.
Internet Marketing Inc. provides integrated online marketing strategies that help companies grow. We think of ourselves as a business development consulting firm that uses interactive marketing as a tool to increase revenue and profits. Our management team has decades of combined experience in online marketing as well as graduate level education and experience in business and finance. That is why we focus on creating integrated online marketing campaigns designed to maximize your return on investment.
If you are serious about improving search traffic and are unfamiliar with SEO, we recommend reading this guide front-to-back. We've tried to make it as concise as possible and easy to understand. There's a printable PDF version for those who'd prefer, and dozens of linked-to resources on other sites and pages that are also worthy of your attention.
At this point, the consumer is weighing their options and deciding on the purchase. Therefore, the goal of this kind of video is to make your audience visualize themselves using your product or service — and thriving. There’s a reason 4X as many customers would rather watch a video about a product than read about it. Videos are able to display functionality and leverage emotions in ways a product description never could.
Paid channel marketing is something you’ve probably come across in some form or another. Other names for this topic include Search Engine Marketing (SEM), online advertising, or pay-per-click (PPC) marketing. Very often, marketers use these terms interchangeably to describe the same concept — traffic purchased through online ads. Marketers frequently shy away from this technique because it costs money. This perspective will put you at a significant disadvantage. It’s not uncommon for companies to run PPC campaigns with uncapped budgets. Why? Because you should be generating an ROI anyway. This chapter walks through the basics of how.
This guide is designed for you to read cover-to-cover. Each new chapter builds upon the previous one. A core idea that we want to reinforce is that marketing should be evaluated holistically. What you need to do is this in terms of growth frameworks and systems as opposed to campaigns. Reading this guide from start to finish will help you connect the many moving parts of marketing to your big-picture goal, which is ROI.
From your homepage to your ecommerce pages, put your video on as many pages as possible on your website; this will help not only drive more visitors to your site, but engage them once they’re there. If you have more than one video, even better! This is the first place you’ll want to start gathering video views — and probably the most impactful of all the views you’ll get.
Hey Liis, Great post with a lot is stats that speak the modern scenario. Video marketing can be leveraged even better when it is a startup company. Given that startups have a limited budget and it is also very necessary for them to be noticed, animated videos are a great option. I recently wrote a blog post on why every startup company should use video marketing http://www.pixelgenio.com/video-marketing/6-reasons-every-startup-company-use-video-marketing I would appreciate your comments on my writing. Cheers!
From Snapchat stories and live social media, to the most highly polished corporate webinars, video marketing comes in every imaginable shape, size and format. Think about your other marketing content: blogs, infographics, ebooks, social media updates and more. That same content, turned into a simple iPhone video, gets you into the video marketing game.
Google uses a hyperlink based algorithm (known as ‘PageRank’) to calculate the popularity and authority of a page, and while Google is far more sophisticated today, this is still a fundamental signal in ranking. SEO can therefore also include activity to help improve the number and quality of ‘inbound links’ to a website, from other websites. This activity has historically been known as ‘link building’, but is really just marketing a brand with an emphasis online, through content or digital PR for example.
Search results are presented in an ordered list, and the higher up on that list a site can get, the more traffic the site will tend to receive. For example, for a typical search query, the number one result will receive 40-60% of the total traffic for that query, with the number two and three results receiving significantly less traffic. Only 2-3% of users click beyond the first page of search results.
Gaining Google's trust doesn't happen overnight. It takes time. Think about building up your relationship with anyone. The longer you know that person, the more likely that trust will solidify. So, the reasoning is, that if Google just met you, it's going to have a hard time trusting you. If you want Google to trust you, you have to get other people that Google already trusts, to vouch for you. This is also known as link-building.
SEO is a marketing discipline focused on growing visibility in organic (non-paid) search engine results. SEO encompasses both the technical and creative elements required to improve rankings, drive traffic, and increase awareness in search engines. There are many aspects to SEO, from the words on your page to the way other sites link to you on the web. Sometimes SEO is simply a matter of making sure your site is structured in a way that search engines understand.
An aesthetically pleasing and informational website is an excellent anchor that can easily connect to other platforms like social networking pages and app downloads. It's also relatively simple to set up a blog within the website that uses well-written content with “keywords” an Internet user is likely to use when searching for a topic. For example, a company that wants to market its new sugar-free energy drink could create a blog that publishes one article per week that uses terms like “energy drink,” “sugar-free,” and “low-calorie” to attract users to the product website.

Search Engine Marketing (SEM) aids businesses gain market online by purchasing Ads on search engines such as Google, Yahoo or Bing. The SEM practices revolve around the promotion of websites in SERPs to optimize the brand presence and conversions. SEM utilizes paid and unpaid advertising means to optimize the promotion of online businesses, and we especially created this What is Search Engine Marketing Guide to help you understand how both ‘paid & unpaid means’ work under the umbrella term Search Engine Marketing.


Incredibly, each sitemap allows you to provide information for up to 50,000 video files. Use tags within the sitemap document to state the location of the video landing page, specific video URL, recommended video player, recommended thumbnail for your video, a title and description, video length and even encode alerts that will tell users whether or not content is appropriate for all ages.
Conduct searches using what you consider to be your most popular keywords. Judge the relevance based on your competition. If that search pulls up competitors and products that offer what you offer, then you may try to get a larger share of that market. If the search terms don't bring up similar products, change your terms to try to find more specific words that will be more profitable.
If Google finds two identical pieces of content, whether on your own site, or on another you’re not even aware of, it will only index one of those pages. You should be aware of scraper sites, stealing your content automatically and republishing as your own. Here’s Graham Charlton’s thorough investigation on what to if your content ends up working better for somebody else.

There are endless platforms for video marketing. YouTube, broadcast television, video boards and street marketing, you name it. The possibilities are endless. With a smartphone, consumers can access online video anytime, anywhere. The same is not true with traditional, paper marketing. With video, you can reach your audience wherever they are in a cost-effective way.
With 360° videos, viewers “scroll” around to see content from every angle — as if they were physically standing within the content. This spherical video style allows viewers to experience a location or event, such as exploring Antarctica or meeting a hammerhead shark. VR allows viewers to navigate and control their experience. These videos are usually viewed through devices such as Oculus Rift or Google Cardboard.
It's clear that online marketing is no simple task. And the reason why we've landed in this world of "expert" internet marketers who are constantly cheerleading their offers to help us reach visibility and penetrate the masses is because of the layer of obscurity that's been afforded to us in part thanks to one key player: Google. Google's shrouded algorithms that cloud over 200+ ranking factors in a simple and easy-to-use interface has confounded businesses for well over a decade now.

Promotional videos can foster trust as well. Some consumers are still skeptical about buying products and services on the internet because they fear fraud and cheating. But effective marketing videos present your products in a conversational form. That creates a sense of individual approach which is why 57% of consumers say that videos gave them more confidence to purchase online.


There are many reasons explaining why advertisers choose the SEM strategy. First, creating a SEM account is easy and can build traffic quickly based on the degree of competition. The shopper who uses the search engine to find information tends to trust and focus on the links showed in the results pages. However, a large number of online sellers do not buy search engine optimization to obtain higher ranking lists of search results, but prefer paid links. A growing number of online publishers are allowing search engines such as Google to crawl content on their pages and place relevant ads on it.[16] From an online seller's point of view, this is an extension of the payment settlement and an additional incentive to invest in paid advertising projects. Therefore, it is virtually impossible for advertisers with limited budgets to maintain the highest rankings in the increasingly competitive search market.
On-page SEO is the work you do on your own website to get a high rank in search engines. Your goal is obviously that your website will show on the first page and perhaps even among the first three search results. On-page SEO does not carry as much weight as off-page SEO in the rankings, but if you don’t get the basics right… it’s unlikely that your off-page SEO will deliver results, either.
All of these questions can help determine what type of video you should make and where you should post it. For example, if your target audience is not familiar with your company, you probably want to make a video that focuses on brand awareness before producing an in-depth, product video. You’ll also want to host your video on a site that already has a large reach, like YouTube. 
The allure of so-called internet riches is nothing new. At every bend and turn in a gauntlet of online gurus, you'll find internet marketers looking to hype up this supposed dream of making money online or earning passive income while kicking up your feet and letting the cash roll in. While internet marketing doesn't quite work that way, in that you actually do have to put in the work, it isn't too difficult to separate the proverbial men from the boys when it comes to the real online earners.
Seriously? Yes, seriously. Search engines are sources of information and not all searchers are super specific. A prime example of this is someone searching for ‘Wine Bars in London’. Whilst you may expect Google to return the likes of Humble Grape or Gordon’s Wine Bar in the results, you will actually find that the main results are dominated by lists.

At this point, the consumer is weighing their options and deciding on the purchase. Therefore, the goal of this kind of video is to make your audience visualize themselves using your product or service — and thriving. There’s a reason 4X as many customers would rather watch a video about a product than read about it. Videos are able to display functionality and leverage emotions in ways a product description never could.


In 1998, two graduate students at Stanford University, Larry Page and Sergey Brin, developed "Backrub", a search engine that relied on a mathematical algorithm to rate the prominence of web pages. The number calculated by the algorithm, PageRank, is a function of the quantity and strength of inbound links.[21] PageRank estimates the likelihood that a given page will be reached by a web user who randomly surfs the web, and follows links from one page to another. In effect, this means that some links are stronger than others, as a higher PageRank page is more likely to be reached by the random web surfer.

The question isn’t whether to use video in your marketing strategy, it’s how. Marketers are faced with so many distribution channels, and it seems the game is always changing. How can marketers keep up? First, YouTube surpassed the popularity of live television, and now the big, flashy report is that Facebook has 4 billion video views each day and may be stealing YouTube’s throne right out from under the video site.


Maintenance. Ongoing addition and modification of keywords and website con­tent are necessary to continually improve search engine rankings so growth doesn’t stall or decline from neglect. You also want to review your link strategy and ensure that your inbound and outbound links are relevant to your business. A blog can provide you the necessary structure and ease of content addition that you need. Your hosting company can typically help you with the setup/installation of a blog.

We have the capability to work with our clients’ internal content, creative, and email marketing teams or handle the whole campaign for them. We incorporate our proven strategic consulting services as part of our Email Marketing offerings in order to help our partner clients develop effective strategies for building their email lists. These consulting services include assistance with event planning, creative design, website and landing page email capture, and much more. We help our clients not only with engagement but new email acquisition, list segmentation and list cleansing.
To make your videos as memorable as possible, ensure that you’re keeping them in line with your brand strategy. This means keeping colors, fonts, logos and voice the same in your video marketing as they are in your blogs and articles. While videos do things text content doesn’t, users should still be able to recognize the style and format of your brand’s videos online.

One of the best ways to improve the look of your video is to include b-roll. B-roll is the supplementary footage included as a cutaway. This might include shots of a customer service rep talking on a phone, a designer editing your website, visuals of your office, or even screenshots of your product. The key with b-roll is to make sure each and every piece enhances the story.
This is also about expectations. Anyone that tries to sell you a get-rich-quick scheme is selling you short. There is no such thing. You have to put in the time and do the work, adding enormous amounts of value along the way. That's the truth of the matter and that's precisely what it takes. Once you understand that it's all about delivering sincere value, you need to understand where the money comes from.
However, with all of these so-called modern conveniences to life, where technology's ever-pervading presence has improved even the most basic tasks for us such as hailing a ride or ordering food or conducting any sort of commerce instantly and efficiently, many are left in the dark. While all of us have become self-professed experts at consuming content and utilizing a variety of tools freely available to search and seek out information, we're effectively drowning in a sea of digital overload.
Facebook Ads and other social media ad platforms, for example, are pay-per-click platforms that do not fall under the SEM category. Instead of showing your ads to people who are searching for similar content like search ads do, social media sites introduce your product to people who happen to be just browsing through their feeds. These are two very, very different types of online advertising.
Once you’ve chosen a persona and can use that to guide your tone of voice, you’ll need to make sure your video is also targeting the right stage in the buyer’s journey. You should always be trying to help buyers achieve their own goals, or solve their problems, not selling. Yet, depending on what stage they’re in of the buyer’s journey, they may not even even have a name for their problem yet.
Unless you’re a creative director or production manager, you shouldn’t have to worry too much aboutExtended Article7 Things You Need to Know About Video Post-ProductionPost-production is the third and final stage of the video production process. By now, you’ve completed all pre-production preparations and have likely just wrapped… Read More the post-production process. That is, it’s helpful to know what goes on, but you likely won’t be doing anything very hands-on during this stage. Post-production revolves heavily around video editing and graphic creation, which means you’ll have either hired experienced editors or an agency, or will have assigned this work to the appropriate people. Keep an eye on timelines and make sure you familiarize yourself with the post-production process — but don’t think of taking all this work on yourself!
DisabledGO, an information provider for people with disabilities in the UK and Ireland, hired Agency51 to implement an SEO migration strategy to move DisabledGO from an old platform to a new one. By applying 301 redirects to old URLS, transferring metadata, setting up Google webmaster tools, and creating a new sitemap, Agency 51 was able to successfully transfer DisabledGO to a new platform while keeping their previous SEO power alive. Additionally, they were able to boost visitor numbers by 21% year over year, and the site restructuring allowed DisabledGO to rank higher than competitors. Their case study is available on SingleGrain.com.

Often the line between pay per click advertising and paid inclusion is debatable. Some have lobbied for any paid listings to be labeled as an advertisement, while defenders insist they are not actually ads since the webmasters do not control the content of the listing, its ranking, or even whether it is shown to any users. Another advantage of paid inclusion is that it allows site owners to specify particular schedules for crawling pages. In the general case, one has no control as to when their page will be crawled or added to a search engine index. Paid inclusion proves to be particularly useful for cases where pages are dynamically generated and frequently modified.
×