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Question What web technologies does Composr use beyond HTML, CSS, and JavaScript?
Answer Composr relies on a wide range of web technologies (depending on what features and settings you use), including:
  • Protocols: HTTP/HTTPS, FTP, SFTP, SMTP, IMAP, POP3, DNS, and others
  • Data formats: XML, JSON, CSV, PHP's serialized format, iCalendar, and various image and archive formats
  • Standards: Accessibility standards (WCAG, WAI-ARIA), metadata standards (Open Graph, schema.org, Dublin Core), and microformats
  • Server-side technologies: PHP, SQL (for database interaction)
  • Composr-specific technologies: Tempcode (template system), Comcode (content language), Page-links, Filtercode, Selectcode, and Language packs
Question How does Composr ensure printed web pages look appropriate?
Answer Composr uses a combination of approaches to ensure printed web pages have a suitable layout:
  • Automatic browser behavior: Browsers typically disable background images when printing.
  • CSS print stylesheets: Composr utilizes CSS to define specific display rules for printed versions of pages, such as removing margins and hiding social media links.
  • wide_print parameter: This parameter, activated through specific links or specifying it in the URL, further influences page layout for printing.
Question How can I test my website's compatibility across different browsers and devices?
Answer Testing your website on different browsers and devices can be challenging due to operating system limitations and device availability. Here are some solutions:
  • Virtual Machines: Use virtual machines to run different operating systems and test various Internet Explorer versions.
  • Device Emulation: Use built-in device emulation features in browsers like Chrome to simulate mobile devices.
  • Online Testing Services: Employ commercial online testing services like BrowserStack to access a wide range of browsers and devices hosted in the cloud.
  • Real Devices: Conduct testing on physical mobile devices for a more realistic user experience.
Question What are the recommended desktop settings for viewing a Composr website?
Answer A minimum screen resolution of 1024x768 is strongly recommended for viewing a Composr website. This is the minimum resolution for which the default theme is designed. Using a lower resolution might lead to display issues or an unsatisfactory browsing experience. As of version 11, smaller resolutions will often trigger the mobile layout automatically (responsiveness) to ensure a better UI for smaller displays.
Question How does Composr handle browser compatibility?
Answer Composr aims to support all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, and Internet Explorer 11. It is designed to work seamlessly with browsers that automatically update, like Chrome and Firefox. For browsers with manual updates, Composr generally supports the last two releases.

While not explicitly supported, Composr will often address bug reports for other popular browsers like Opera, Chromium, and Konqueror. Additionally, Composr strives to provide an accessible experience for text-mode browsers and those designed for users with disabilities.
Question What is CSS and how does it impact website design?
Answer CSS (Cascading Style Sheets) is a language used to describe the visual presentation of a web page written in HTML or XHTML. It controls aspects like:
  • Fonts and typography: Defining font families, sizes, weights, and styles.
  • Colors and backgrounds: Setting colors for text, backgrounds, borders, and other elements.
  • Layout and positioning: Controlling the placement and arrangement of elements on a page.
  • Visual effects: Adding shadows, gradients, transitions, and other visual enhancements.

By separating content structure (XHTML) from visual presentation (CSS), websites become easier to maintain and update. Changes to the design can be made without altering the underlying HTML structure.

Composr utilizes CSS extensively for theming, allowing users to manipulate the website's visual appearance.
Question Why is understanding XHTML important for website customization?
Answer XHTML (Extensible HyperText Markup Language) is the language used to structure web page content. It defines the various elements of a webpage, such as headings, paragraphs, images, and links.

Understanding XHTML is crucial for website customization because it allows you to:
  • Modify page layout: Change the arrangement and positioning of elements on a page.
  • Add new content: Insert additional text, images, or other multimedia elements.
  • Customize the appearance of existing elements: Change fonts, colors, sizes, and other visual styles.
  • Integrate interactive features: Embed JavaScript code for dynamic functionality.

Composr uses XHTML for its templates, allowing users to extensively customize the website's design and layout.
Question How does JavaScript enhance website interactivity?
Answer JavaScript is a programming language that runs in web browsers, allowing for dynamic and interactive elements on web pages. It enables features like:
  • Dynamic content updates: Modifying page content without requiring a full page reload.
  • User interface enhancements: Creating interactive elements like dropdown menus, image sliders, and form validation.
  • Animations and visual effects: Adding visual appeal and engaging user experiences.
  • Asynchronous communication: Fetching data from, or sending data to, servers in the background without disrupting user interaction.

Composr relies on JavaScript for its default theme and administrative features.
Question What is the difference between cookies and sessions?
Answer While both cookies and sessions are used for user identification and maintaining state, there are key differences:
  • Storage: Cookies are stored on the user's computer, while sessions are stored on the server.
  • Expiration: Session cookies expire when the browser is closed, while persistent cookies have a set expiration date. Sessions typically expire after a period of inactivity.
  • Data sensitivity: Sessions are generally used for more sensitive data, as the information is not stored on the user's computer and therefore less likely to be stolen by a hacker.

Composr uses both cookies and sessions. Session cookies are primarily used for user identification (such as anonymously matching a user to a session in the server database), while persistent cookies can be used for remembering login details if the user chooses.
Question What are cookies and how do they work?
Answer A cookie is a small piece of data that a website stores on a user's computer. It is sent from the user's web browser to the web server each time a page is viewed. Cookies are used for various purposes, including:
  • User identification: Cookies can be used to identify a specific user, even if they are not logged in. This allows websites to remember user preferences, shopping cart contents, and other information.
  • Tracking user behavior: Cookies can be used to track user behavior on a website, such as the pages they visit and the links they click. This information can be used to improve the website's design and content.
  • Advertising: Cookies can be used to deliver targeted advertising to users based on their browsing history.

There are two main types of cookies:
  • Session cookies: These cookies are temporary and are deleted when the user closes their web browser. They are often used to store information about the user's current session, such as the items in their shopping cart.
  • Persistent cookies: These cookies are stored on the user's computer for a longer period. They can be used to remember user preferences, such as their login details or language settings.

Top 10 Entries

Question How can I communicate privately with other members?
Answer Conversr offers two ways to have private conversations:
  • Private Topics:
    • Start a private topic from a member's profile, by clicking "Whisper" on their post and selecting "Quote post to a new Private Topic with this member," or from your account by selecting "Start a Private Topic" and entering the desired username.
    • Participate in the topic just like a regular forum topic.
    • You will receive notifications for new posts in your private topics.
    • Topics can be moved to the "Trash" category or other categories of your choosing for organization.
  • Inline Personal Posts (Whispers):
    • Send a private message within a public topic by clicking "Whisper" on a post and selecting "In-topic personal post to this member."
    • Whispers are visible only to the sender and recipient, and the whispered post is highlighted.
    • Receive notifications for new whispers.
Question What are some key considerations when choosing field types for my catalogue?
Answer When selecting field types, consider:
  • Data type: Choose the appropriate field type for the data you want to collect (text, numbers, dates, etc.).
  • Comcode support: If you need rich text formatting or translation support, opt for fields that support Comcode.
  • Validation: Some field types offer built-in validation to ensure data accuracy.
  • Privacy implications: Be mindful of the sensitivity of the information and whether it requires specific privacy considerations.
Question How can I ensure the privacy of personal information stored in my catalogues?
Answer Composr's privacy system can help manage personal data within catalogues. To leverage it:
  • Use specific field types: Utilize dedicated field types for sensitive data like member IDs, usernames, emails, IP addresses, and passwords for efficient handling by the privacy system.
  • Enable "May contain personal information": Mark fields that may contain personal information, enabling the privacy system to identify and handle such data during purging or downloading.
Question What are some specialized types of catalogues available in Composr?
Answer Composr supports specialized catalogues, including:
  • eCommerce catalogues: Integrate with the Composr shopping cart for online stores.
  • Classified ads: Offer features like archival categories and usergroup-specific advert durations.
Question How are breadcrumbs handled in catalogue views?
Answer Catalogue breadcrumbs can be customized using XML code (Admin Zone > Structure > Configure breadcrumb overrides). By default, they include the list of catalogues. However, Composr provides default breadcrumb XML that removes this, focusing on the current category hierarchy. Tree catalogues omit the index link, while non-tree catalogues include it.
Question What is a tree catalogue and how do I create one quickly?
Answer A tree catalogue has a hierarchical category structure (which can contain sub-categories), similar to the download system. Composr offers a special feature for creating tree catalogues by simply typing the desired categories in a specific format (which is explained and available when adding a new catalogue), which automatically generates the tree structure.

Alternatively, a non-tree catalogue is simpler and only has top-level categories.
Question Can I customize the look and feel of my catalogue?
Answer Yes, Composr allows advanced users to customize catalogue appearance through Tempcode programming. This involves using template IF directives to apply specific styles based on the catalogue's name and manipulating template parameters for complex layouts. Alternatively, you can create new template files using the catalogue name in the file to specify complete templates for specific catalogues. Check out the tutorials for more information.
Question What are the different display types for catalogue entries?
Answer Composr provides four main display types for catalogue entries:
  • Title lists: Simple lists of entry titles linking to the full entry page.
  • Field-maps: Highly flexible, displaying as many fields as you desire within the category view.
  • Tabular listings: Organizes entries into columns, suitable for short data fields.
  • Grids of images: Displays entries as a grid of images, ideal for visual catalogues.

It is possible to create your own templates including ones that are specific to a catalogue. Check out the catalogues tutorial for more information.
Question Why might I need a programmer for my catalogue?
Answer While Composr catalogues offer great flexibility, they can become complex if you need sophisticated data relationships, efficient searching, high data reliability, or advanced customization. In these cases, a programmer's expertise in database design, normalization, and templating can be invaluable.
Question What are catalogues in Composr?
Answer Catalogues are custom databases you can create within your Composr website. They allow you to define your own records with custom fields and organize them into categories. Think of them as powerful tools for managing various types of content, like a database of books, a directory of businesses, or even a classified ads system.