search results

  1. SMART 65"" Pro interactive display with IQ -White - No mount included

    65 quot; Pro interactive display with IQ WhiteNo mount included with this screen The versatile, all in one display for visual collaboration MX Pro seriesThe display that lets high performance teams interact and collaborate from any location, anytime. The SMART Board MX Pro series has all the interactive tools teams need to collaborate, co create and drive decisions faster. Interactivity made easyThe MX Pro series is designed with collaboration in mind and simple enough for even a first time user to walk up and use from day one. The world leader in multi user touch Touch technology masteredSMART makes the world s ONLY interactive displays that allow multiple users to freely write, erase and gesture at the same time over any application. Don t worry about figuring out the controls the MX Pro series is smart enough to know the difference between your touch, gesture, pen and palm erase without pressing a button. The power of SMART InkLeave your mark effortlesslySMART Ink software helps to keep ideas flowing and meetings dynamic. Simply pick up a pen and write into PDFs, Microsoft Office files, browsers and connected video sources. Plus, only SMART Ink lets you write and navigate at the same time without frustrating overlays. It really is as easy as putting pen to paper. Bigger, betterVideo conferencingThe MX Pro series boasts an integrated six element microphone array and combined 40W speakers for video conferencing with an immersive audio experience without connecting additional hardware . The MX Pro works with the SMART Ultra HD Camera 120, Logitech and other UVC webcams, Microsoft Teams, Zoom, Google Meet, Webex and more to engage hybrid teams for effective collaboration. Why SMART interactive displays are superior Powered by Android 11With a simple tap, switch from showing a video to writing and sharing on a digital collaborative whiteboard to keep ideas flowing. Works with any deviceThe MX Pro series works with popular iOS, Windows and Android devices, so you can easily collaborate, share screens and stream media using native casting, apps or a browser. Plug and Play with Windows InkWrite and save editable annotations directly into Microsoft Office files without installing any additional software or drivers. Two USB C portsDual USB C ports supporting video, audio, touch and charging make it easy for participants to interact and share with only one cord. HDMI pass throughConnect to additional displays for more collaboration space or project at any size with HDMI out. Faster, louder, clearerWith Wi Fi 6, 20W speakers, and zero bonded glass for precise inking and clearer, crisper viewing from every angle.

    AV Parts Master

  2. Samsung Digimax 240 2.0MP Compact Digital Camera Silver Boxed Tested - VGC

    Brilliant condition, the box isn’t great but it’s included regardless.

    eBay

  3. Aver M90UHD Mechanical Arm Visualizer

    AVerVision M90UHD See a World in a Grain of Sand Mechanical Arm Visualiser (Document Camera) The M90UHD is a visualiser with an impressive lineup of features that include a 13 megapixel camera, 4K imaging, and a transcendent 322X total zoom capacity. These characteristics help teachers demonstrate all types of materials in an extraordinarily vivid way. What s more, instinctive function buttons, an extendable arm, and AVerTouch software allow teachers of any subject to create fantastic collaborations in next to no time. The Only 322X Total Zoom Equipped with a 14X optical and 23X digital zoom, the M90UHD s amazing 322X total zoom buries the competition. Every student even the ones in the back row can enjoy a wonderful learning journey without missing a single detail. Splendid 4K Image Quality Ultra HD output resolution and 13 megapixels display every subtle detail of topographical maps, chemical experiments, stereo models, and more. This clarity improves teaching quality and enhances student comprehension. One Push Recording, Capturing, and Playback Intuitive recording and capturing enable users to record the complete teaching process with one button. Also, the playback function lets teachers review their lessons and examine student behavior to successfully prevent any accidents. Massive A3 Shooting Area A larger than A3 size shooting area captures items as big as building models. In addition, the position indicator on the camera head helps teachers always display materials accurately. Multiple Ports Fit Any Device With HDMI, VGA, and USB jacks available, users can connect the M90UHD to any display or computer and use the devices they re most familiar with to teach. Super Efficient Mechanical Arm Featuring a low center of gravity and a fully adjustable, neatly foldable mechanical arm, the visualizer is easy to operate with only one hand and takes up minimal storage space. Rapid Autofocus Banishes Blur Some visualizers have a difficult time focusing on moving objects, but not this one. A single press of a button activates a premium quality autofocus function that instantly clarifies the image and maintains students attention. Embedded Light The M90UHD offers an embedded light for adjusting luminance. Even in a dark presentation environment, teachers can easily provide a comfortable viewing experience. AVerTouch Software Take Your Ideas Anywhere AVerTouch is ultra powerful software designed exclusively for AVer visualisers. One touch connects your visualiser with mobile devices for content sharing, and you can sync to the cloud to automatically save annotated, captured, and recorded files. Teaching is incredibly fun when you use AVerTouch to engage with your students.

    AV Parts Master

  4. SAMSUNG DIGIMAX L60 6.0MP Compact Digital Silver Camera 100% TESTED & WORKING

    I have been told by the previous Owner that it works perfectly well.

    eBay

  5. Crestron Flex Advanced Video Conference System Integrator Kit with a Wall Mounted Control Interface for Microsoft Teams® Rooms

    The UC CX100 T WM Crestron Flex integrator kit provides a customizable video conference solution for use with Microsoft Teams Rooms software. It supports single or dual video displays1 (not included) and features a UC presentation transmitter, a wall mount touch screen and a UC bracket assembly.Native Microsoft Teams Rooms ExperienceThe UC CX100 T WM system brings the full Microsoft Teams Rooms UC experience to any meeting space in an enterprise or SMB facility, whether implementing a cloud based Microsoft Teams Rooms deployment, on premises Skype for Business software, or a hybrid of the two.Custom Room IntegrationThe UC CX100 T WM system provides the essential components needed to design a fully custom video conferencing space using your choice of display devices, cameras, speakers, microphones, and other AV equipment. Any Microsoft Teams software compliant USB camera and USB audio conferencing interface (or speakerphone) may be used.Intuitive User InterfaceWith a large 10.1 in. (257 mm) capacitive touch screen display, the Crestron wall mount touch screen (TSW 1070) provides superior conferencing control in meeting rooms, huddle spaces, and executive offices. The touch screen also offers optional control of room lighting, shades, thermostats, and other equipment.2Simplified DeploymentThe UC Bracket Assembly provides preassembled components on one ready to mount bracket to simplify installation. The assembly can be mounted on a wall, or it can be attached to the rear of the display device. Crestron's direct connection method further simplifies installation with a single connection from the touch screen to the UC Bracket Assembly.3Wall Mount OptionsUsing the bracket provided, the touch screen is easily installed over a 2 gang or 3 gang US electrical box, or a 2 gang European or UK electrical box. A security latch option is included to deter unauthorized removal of the touch screen.Crestron Control System IntegrationThe UC CX100 T WM can integrate with a Crestron control system to enable touch screen control of room lighting, motorized window shades, climate control, AV, and other amenities.2Bring Your Own Device (BYOD)Conference room visitors can connect their laptop to the Crestron Flex system to use their own UC conference platform. The UC Presentation Transmitter (UC PR) switches to the connected laptop's UC platform and returns to the native platform when disconnected.4 For a list of BYOD tested devices on the UC PR, refer to OLH Article 1000889.Enterprise Grade SecurityCrestron Flex is an enterprise grade solution, engineered in partnership with Microsoft to integrate seamlessly into any Microsoft Teams Rooms software deployment. Crestron Flex is ideally equipped for mass deployment throughout any sized corporate, university, medical, military, or government facility.Easy Provisioning and Device ManagementThe XiO Cloud service is an IoT cloud based provisioning service (available separately) that enables installers and IT managers to easily deploy and manage thousands of devices. The XiO Cloud service allows for system alerts, network management and provisioning, and the pairing of a control device to the system s UC Engine. System updates are controlled by Windows software update.Visit www.crestron.com xiocloud for additional information.Premium Level SupportCrestron Flex Care is an optional subscription service that automatically renews annually, providing 24 7 live remote technical support, an extended five year warranty on Crestron hardware, expedited advance replacements, and a discounted rate for on site support.Visit www.crestron.com flexcare for additional information.Dual Control OptionA TS or TSW 70 series 10.1 in. touch screen may be added to the solution as an additional control point for the Microsoft Teams Rooms environment.2, 3Deployment ResourcesView the Crestron Flex Pre Deployment Checklist to help plan your Crestron Flex installation. Key Features Conferencing integration solution for Microsoft Teams Rooms software Present, call, conference, and collaborate using your own device's UC conference platform (BYOD) or the native Microsoft Teams Rooms platform Native Microsoft Teams Rooms touch screen UI provides a consistent user experience with simple operation and one touch meeting joins Complete kit contains a 10.1 in. touch screen, UC Presentation Transmitter, and UC Bracket Assembly Optional integration with Crestron control systems Direct connection option between UC Engine and touch screen for simple installation and configuration Network management and provisioning, system alerts, and the pairing of the touch screen to the system s UC Engine through the XiO Cloud service Premium level support with Crestron Flex Care (optional) Enterprise grade security connects and communicates securely over any enterprise or SMB network Supports single or dual video displays (not included)

    AV Parts Master

  6. Samsung Digital Camera Digimax 101 1.3MP Silver Tested + SD Card

    Used Working Good condition Comes with memory card Takes 2 AA batteries not included

    eBay

  7. Multibrackets Display Stand 180 Single Silver

    Multibrackets Display Stand 180 Single Silver is the entry level floor stand from Multibrackets and one of the most flexible and multifunctional display stands of its kind. With the 180cm height the floor stand is useful for both for conference rooms and other situations where the viewers are sitting down or standing up. When developed much emphasize has been put into the stability and overall quality of the display stand, both when put in place but also when in movement, with wheels included as standard. This means the series is very easy to move around. This makes it a perfect partner for use in public environments such as conference rooms, class rooms or hospitals. The M Multibrackets Display Stand has many accessories like shelves, camera holder etc and thanks to the Multibrackets Anti theft system, M Multibrackets Display Stand 180 Silver can lock the screen to the display stand. Works with most M Public Display Stand Accessories.So don t just get any floor stand, but one with a more versatile usage area. HighlightsSleek Nordic designAluminum heavy duty, light weight construction with steel legsPresent digital content wherever you want itEasy to assemble and installEasily roll the display stand through standard size doorways and thresholds180cm height perfect for seated and standing audiencesOptional: Camera holder, Shelves etcComes in silver and blackHas a built in Anti theft system for an optional pad lockNOTE: Does not have 220V (See M Public Display Stand Series)NOTE: Does not have landscape and portrait rotation (See M Public Display Stand Series) SpecificationM Display Stand 180 Single SilverFor screen size:24 63 Feature:Highly customizableVESA standard:200x200 to 700x400 mmArticle No:7 350 073 730 636Size in mm: (WxDxH)available in a momentAdjustable height:YesWeight:24 kgColour:SilverMax load:50 kgDVD Shelf Camera holder:Optional, not includedPower rail 220V:NoPackage size:870x435x110 mmScreen position:Landscape (portrait possible but with limitations of bracket size width)Accessories:Works with most M Public Display Stand Accessories.Wheels:YesMount to floor:NoWarranty:5 years Multibrackets Display Stand 180 Single Silver is the entry level floor stand from Multibrackets and one of the most flexible and multifunctional display stands of its kind. With the 180cm height the floor stand is useful for both for conference rooms and other situations where the viewers are sitting down or standing up. When developed much emphasize has been put into the stability and overall quality of the display stand, both when put in place but also when in movement, with wheels included as standard. This means the series is very easy to move around. This makes it a perfect partner for use in public environments such as conference rooms, class rooms or hospitals. The M Multibrackets Display Stand has many accessories like shelves, camera holder etc and thanks to the Multibrackets Anti theft system, M Multibrackets Display Stand 180 Silver can lock the screen to the display stand. Works with most M Public Display Stand Accessories.So don t just get any floor stand, but one with a more versatile usage area. HighlightsSleek Nordic designAluminum heavy duty, light weight construction with steel legsPresent digital content wherever you want itEasy to assemble and installEasily roll the display stand through standard size doorways and thresholds180cm height perfect for seated and standing audiencesOptional: Camera holder, Shelves etcComes in silver and blackHas a built in Anti theft system for an optional pad lockNOTE: Does not have 220V (See M Public Display Stand Series)NOTE: Does not have landscape and portrait rotation (See M Public Display Stand Series) SpecificationM Display Stand 180 Single SilverFor screen size:24 63 Feature:Highly customizableVESA standard:200x200 to 700x400 mmArticle No:7 350 073 730 636Size in mm: (WxDxH)available in a momentAdjustable height:YesWeight:24 kgColour:SilverMax load:50 kgDVD Shelf Camera holder:Optional, not includedPower rail 220V:NoPackage size:870x435x110 mmScreen position:Landscape (portrait possible but with limitations of bracket size width)Accessories:Works with most M Public Display Stand Accessories.Wheels:YesMount to floor:NoWarranty:5 years

    AV Parts Master

  8. SAMSUNG DIGIMAX A6 6.0 MP DIGITAL CAMERA. TAKES SD CARDS/AA BATTERIES (NEITHER I

    TAKES SD CARDS/AA BATTERIES (NEITHER INCLUDED). FULLY WORKING CONDITION WITH NICE OPTICS.

    eBay

  9. Multibrackets Public Floorstand Dual Pillar 180 HD

    Introducing the M Public Floorstand Dual Pillar 180 HD a flat panel TV cart that was designed to include all of the features you may need, making it perfect for any application. Mobility, appealing design, display height adjustment, pre assembled base and safety certifications ensure quick assembly while providing a ridged, but attractive and structured that fits into any decor.Versatility that holds up to 100 displaysNow you can mount flat panel screens up to 100 displays on a movable Floorstand. With its black, textured powder coat finish it helps hide finger prints or dust. This Floorstand features an easy to position display height adjustment function that is unique. This innovative design with a built in stopper mechanism into the two columns creates a tool free and effortless TV height adjustment. This function reduces time consuming adjustments of height that is used on other floorstands. Now you in seconds can match your audience wheter its sitting or standing up. For fast installation the base comes pre assembled. VESA specifications ranges from 200x200 up to 1000x600 VESA display mounting pattern, and sturdy swivel casters two of which are lockable to keep the Floorstand in it s place. The integrated cable management system that helps keep your cables organized and out of the way. During its introduction this versatile Floorstand also comes with accessories such as the component shelf and camerashelf included as standard. All modularIt s innovative modular design makes it easy to assemble and dismantle. The extendable aluminum base make packing size compact for costs reduction in shipping and save storage space without compromising to its rigidity and stability during maneuvers. The heavy duty castors make it easy to move from room to room while the UL certification ensures you that it can be done with safety in mind.The M Public Floorstand Dual Pillar 180 HD can be used with screens in a standard landscape mode. It can be used with or without shelf (included) and a camera holder (included).HighlightsAluminum light weight Heavy Duty constructionTool free and effortless TV height adjustmentInstant adjustment of the viewing height for a sitting or standing audienceIntegrated cable managementPre assembled base provides rigidity, stability and quick assemblyMultibrackets texture powder coating finish helps hide finger prints or dust SpecificationM Public Floorstand Dual Pillar 180 HDFor screen size:60 100 Feature:Large screen capacityMax VESA:1000 x 600 mmVESA standard:200x200 300x300 400x400 600x400 600x600 700x500 800x400 800x600 900x600 up to 1000x600 mmArticle No:7 350 073 736 324Size in mm: (WxDxH)Package: 120x56x26 cmAdjustable height:Yes, 1390 1740 mmWeight:45 kgColour:BlackMax load:90 kgDVD Shelf Camera holder:IncludedPower rail 220V:NoScreen position:LandscapeWheels:IncludedMount to floor:NoWarranty:5 years Introducing the M Public Floorstand Dual Pillar 180 HD a flat panel TV cart that was designed to include all of the features you may need, making it perfect for any application. Mobility, appealing design, display height adjustment, pre assembled base and safety certifications ensure quick assembly while providing a ridged, but attractive and structured that fits into any decor.Versatility that holds up to 100 displaysNow you can mount flat panel screens up to 100 displays on a movable Floorstand. With its black, textured powder coat finish it helps hide finger prints or dust. This Floorstand features an easy to position display height adjustment function that is unique. This innovative design with a built in stopper mechanism into the two columns creates a tool free and effortless TV height adjustment. This function reduces time consuming adjustments of height that is used on other floorstands. Now you in seconds can match your audience wheter its sitting or standing up. For fast installation the base comes pre assembled. VESA specifications ranges from 200x200 up to 1000x600 VESA display mounting pattern, and sturdy swivel casters two of which are lockable to keep the Floorstand in it s place. The integrated cable management system that helps keep your cables organized and out of the way. During its introduction this versatile Floorstand also comes with accessories such as the component shelf and camerashelf included as standard. All modularIt s innovative modular design makes it easy to assemble and dismantle. The extendable aluminum base make packing size compact for costs reduction in shipping and save storage space without compromising to its rigidity and stability during maneuvers. The heavy duty castors make it easy to move from room to room while the UL certification ensures you that it can be done with safety in mind.The M Public Floorstand Dual Pillar 180 HD can be used with screens in a standard landscape mode. It can be used with or without shelf (included) and a camera holder (included).HighlightsAluminum light weight Heavy Duty constructionTool free and effortless TV height adjustmentInstant adjustment of the viewing height for a sitting or standing audienceIntegrated cable managementPre assembled base provides rigidity, stability and quick assemblyMultibrackets texture powder coating finish helps hide finger prints or dust SpecificationM Public Floorstand Dual Pillar 180 HDFor screen size:60 100 Feature:Large screen capacityMax VESA:1000 x 600 mmVESA standard:200x200 300x300 400x400 600x400 600x600 700x500 800x400 800x600 900x600 up to 1000x600 mmArticle No:7 350 073 736 324Size in mm: (WxDxH)Package: 120x56x26 cmAdjustable height:Yes, 1390 1740 mmWeight:45 kgColour:BlackMax load:90 kgDVD Shelf Camera holder:IncludedPower rail 220V:NoScreen position:LandscapeWheels:IncludedMount to floor:NoWarranty:5 years https: www.youtube.com embed 6x4FmCy0JGY

    AV Parts Master

  10. Samsung Digimax L730 7.2MP Compact Digital Camera Silver Tested

    Tested and working taken pictures with it comes with new charger, new battery and 1GB SD card.

    eBay

  11. Logitech Rally Bar Huddle + TAP IP

    RALLY BAR HUDDLEAll in one video bar for huddle and small rooms. ALLURINGLY SIMPLEFeaturing a sleek design and robust technology Rally Bar Huddle is a straightforward and powerful solution for small spaces. ENABLE EQUITABLE MEETINGSEnsure everyone can be seen and heard clearly during hybrid meetings. AI video intelligence, advanced sound pickup, noise suppression, and ongoing software improvements provide a clear and natural meeting experience for remote workers. 3 WAYS TO DEPLOYUse Rally Bar Huddle as a meeting room appliance, in USB mode connected to a meeting room PC, or connect via laptop.SET UP IN MINUTESDesigned to deliver video meetings with ease, Rally Bar Huddle is quick to set up, simple to manage, and easy to integrate with Tap IP through CollabOS. Plus, use the included Multi Mount to mount Rally Bar Huddle one of three ways; on a wall, table, or above a display. CLEAN CABLINGCreated for huddle and small collaboration spaces, Rally Bar Huddle operates as a standalone conference camera or as part of a greater room solution1Appliance mode deployment shown, cabling can vary by deployment type..

    AV Parts Master

  12. Samsung Digimax V700 7.1MP Compact Digital Camera Silver BODY ONLY - NO BATTERY

    eBay

  13. AVer 61S9320000AC

    PTC330UV2 4K 30XZoom HDMI 3GSDI USB RJ45 The PTC330UV2 AI Auto Tracking PTZ Camera makes powerful and reliable Pro AV capability available to everyone. Drawing inspiration from the AVer Professional PTZ Camera family the PTC330UV2 features in house AI functions like Presenter Mode Zone Mode and Hybrid Mode auto tracking thanks to Human Detection processing. Combine the 30X Optical Zoom lens and 4K resolution with hybrid auto tracking and smooth PTZ functions for broadcasting streaming or recording. Your exciting journey of audio and video capturing starts here! PTZLink compatible AVer PTZ Link is the one and only software in the market to connect AVer Professional PTZ Cameras to microphone systems especially products from Shure? and Sennheiser. With the aid of PTZ Link you can easily turn AVer s PTZ Camera to a voice tracking camera through setting preset points. Enjoy the most advanced technology that brings out the most productive meeting thanks to the excellent audio and video combination. Follow link or see in below 'options' https: presentation.aver.com model ptz link 4K Output Resolution Equipped with 4K resolution the PTC330UV2 provides ultra precise auto tracking. The PTC330UV2 also features a Sony sensor that maintains a truly impressive video performance through every frame of your production. 30X Optical Zoom The zoom power of the PTC330UV2 camera reaches an incredible 360X (including 12X Digital Zoom). It works even while the camera is panning and tilting allowing you to highlight content and rapidly change shooting angles. Operate a closer and clearer video feed with the unbeatable PTZ performance of the PTC330UV2. Human Detection AI Welcome AVer s most advanced AI tool yet Human Detection. This highly accurate processing function enables PTC330UV2 to easily detect and capture human forms and moving objects in seconds. Never miss a tracking target again. Click Track Redirect focus in an instant with the PTC330UV2. Simply click on a target to quickly adjust the shooting angle and initiate precise tracking. This advanced feature is easy for anyone to operate via both remote control and intuitive Web UI. Presenter Mode Track your target everywhere with Presenter Mode. This feature gives presenters the flexibility to leave the stage and interact with the audience all while being continuously tracked. The camera stays locked on its target even if other people or objects get in the way. Zone Mode Zone Mode enhances your ability to capture content on multiple displays. Create up to four content zones to steadily capture the content on display rather than the presenter s movements. Hybrid Mode Hybrid Mode provides the utmost freedom of movement for performing artists. Preset effective areas for Zone Tracking in advance and once you step into those areas you will be targeted together with the content. When you are outside you are just like in Presenter Mode.

    AV Parts Master

  14. Samsung Digimax A6 6.0MP Compact Digital Camera - Silver Working with Case - VGC

    It takes 2 AA batteries. It has been formatted so all set for you to go.

    eBay

  15. SMART 55"" Pro interactive display with IQ -White - No mount included

    55 quot; Pro interactive display with IQ WhiteNo mount included with this screen The versatile, all in one display for visual collaboration MX Pro seriesThe display that lets high performance teams interact and collaborate from any location, anytime. The SMART Board MX Pro series has all the interactive tools teams need to collaborate, co create and drive decisions faster. Interactivity made easyThe MX Pro series is designed with collaboration in mind and simple enough for even a first time user to walk up and use from day one. The world leader in multi user touch Touch technology masteredSMART makes the world s ONLY interactive displays that allow multiple users to freely write, erase and gesture at the same time over any application. Don t worry about figuring out the controls the MX Pro series is smart enough to know the difference between your touch, gesture, pen and palm erase without pressing a button. The power of SMART InkLeave your mark effortlesslySMART Ink software helps to keep ideas flowing and meetings dynamic. Simply pick up a pen and write into PDFs, Microsoft Office files, browsers and connected video sources. Plus, only SMART Ink lets you write and navigate at the same time without frustrating overlays. It really is as easy as putting pen to paper. Bigger, betterVideo conferencingThe MX Pro series boasts an integrated six element microphone array and combined 40W speakers for video conferencing with an immersive audio experience without connecting additional hardware . The MX Pro works with the SMART Ultra HD Camera 120, Logitech and other UVC webcams, Microsoft Teams, Zoom, Google Meet, Webex and more to engage hybrid teams for effective collaboration. Why SMART interactive displays are superior Powered by Android 11With a simple tap, switch from showing a video to writing and sharing on a digital collaborative whiteboard to keep ideas flowing. Works with any deviceThe MX Pro series works with popular iOS, Windows and Android devices, so you can easily collaborate, share screens and stream media using native casting, apps or a browser. Plug and Play with Windows InkWrite and save editable annotations directly into Microsoft Office files without installing any additional software or drivers. Two USB C portsDual USB C ports supporting video, audio, touch and charging make it easy for participants to interact and share with only one cord. HDMI pass throughConnect to additional displays for more collaboration space or project at any size with HDMI out. Faster, louder, clearerWith Wi Fi 6, 20W speakers, and zero bonded glass for precise inking and clearer, crisper viewing from every angle.

    AV Parts Master

  16. Samsung Digimax D75 7.2MP Digital Camera - Silver

    This item has been previously used however, it is in reasonably good condition. The item may have some signs of cosmetic wear, but is fully operational and functions as intended - please see photos for more detail regarding condition. This camera requires 2x AA batteries (not included) Memory card not included (SD cards compatible) Please make sure you are happy with the condition and you have read the description before purchasing. Any questions please message me.

    eBay

  1. Previous Page (Page 21)Next Page (Page 23)