CA2237333C - A method and apparatus for making a hypermedium interactive - Google Patents

A method and apparatus for making a hypermedium interactive Download PDF

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Publication number
CA2237333C
CA2237333C CA002237333A CA2237333A CA2237333C CA 2237333 C CA2237333 C CA 2237333C CA 002237333 A CA002237333 A CA 002237333A CA 2237333 A CA2237333 A CA 2237333A CA 2237333 C CA2237333 C CA 2237333C
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Prior art keywords
server
hyperlink
agent
client
application
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CA002237333A
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French (fr)
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CA2237333A1 (en
Inventor
Jeff Muir
Andrew L. Stergiades
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Citrix Systems Inc
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Citrix Systems Inc
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
    • G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
    • G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/95—Retrieval from the web
    • G06F16/958—Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/54—Interprogram communication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/54—Interprogram communication
    • G06F9/541—Interprogram communication via adapters, e.g. between incompatible applications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2209/00—Indexing scheme relating to G06F9/00
    • G06F2209/54—Indexing scheme relating to G06F9/54
    • G06F2209/541—Client-server
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2209/00—Indexing scheme relating to G06F9/00
    • G06F2209/54—Indexing scheme relating to G06F9/54
    • G06F2209/549—Remote execution

Abstract

A system and method of making a hypermedium page interactive. In one embodiment the system includes a hyperlink on the hypermedium page displayed on a client node; a hyperlink configuration file (corresponding to the hyperlink on the client node) located on a network server node; and a client agent located on the client node. In response to a user selecting the hyperlink on the hypermedium page, the client agent establishes a communications link from the client agent to an application execution server agent on an application server using the information located in the configuration file obtained from the network server node. In response to the creation of the communications link between the application execution server agent and the client agent, the application executes on the application execution server and the user is capable of interactively using the application running on the application execution node from the client node. Data input and display occurs at the client node under the control of the client agent.

Description

A METHOD AND APPARATUS FOR MAKING A HYPERMEDIiJM INTERACTIVE
Field of the Invention The invention relates generally to the field of computer communications and more specifically to the field of remote application processing.
Background of the Invention A hypermedium is a graphical display which contains a series of graphic and textual images which are referred to as hyperlinks. Each hyperlink typically corresponds to additional information which is available to a user of the hypermedium. For example a hypermedium display might be an encyclopedic article about flight. If the graphical display of the article includes a picture of a rocket, and if the user is able to obtain information about the engine of the rocket by selecting (typically by using a pointing device referred to as a computer mouse) a portion of the display showing the engine, the portion of the picture containing the rocket engine is referred to as a hyperlink. That is, the portion of the picture containing the engine is a link to information about the engine. The activation of a hyperlink causes the hypermedium to request a data.file of the desired information from the program actually controlling the hypermedium.
When a hypermedium is used in conjunction with a network, for example the world wide web or the Internet, a user on a client node on the network first accesses what is termed a home page or a web page. This home page or web page is obtained from another node on the net, termed a network server, and is displayed on the client node by a program termed a network browser or web browser. In such a case, when the user selects the hyperlink (in the previous example, the portion of the display showing the rocket engine) a request is made to the network browser for the data file containing the requested information. The network browser on the user's node establishes communication with the network node, the data server, having data corresponding to the requested hyperlink. In this case the node having information about the rocket engine contains the information required by the hyperlink.
Although hypermedium has been used to transfer information to a user in the manner just discussed, it is desirable to be able to use a hypermedium display to interactively execute applications such as database programs located on another computer, an application execution server, on the network. The present invention relates to a method and apparatus to accomplish this task.
Summary of the Invention The invention relates to a system of making a hypermedium page interactive to thereby permit an application to be executed on one node and the result displayed and data entered on another node.
'The hypermedium page is displayed by a network browser. In one embodiment, the system comprises of a client node, a hyperlink on the hypermedium page that is displayed on the client node, a network server node that is in communication with the client node, a hyperlink configuration file (corresponding to said hyperlink on said client node) located on the network server node, and a client agent that is located on the client node. In addition, the system also comprises of an application execution server node that is in communication with the client node and the network server node. This application execution server hosts an executable application.
Additionally, the system also comprises of a server agent that is located on the application execution server node. The client agent on the client node is responsible for establishing a communications link with the server agent, in response to the configuration file. The application hosted on the application execution server runs in response to the communications link between the client agent and the server agent. The client node displays output data received from the executable application without intervention from the network browser.
The invention also relates to a method of making a hypermedium page interactive, whereby the hypermedium page is displayed by a network browser. The method comprises the steps of selecting a hyperlink on the hypermedium page displayed on a client node (the hyperlink provides a link to an executable application), retrieving (from a network server to the client node) a hyperlink configuration file that corresponds to the hyperlink and which identifies a server on which the application will be executed, and starting a client agent on the client node. The method further comprises the steps of creating a communication link between the client agent and the application execution server identified by the hyperlink configuration file (the link is created by the client agent), starting the application on the application execution server in response to the -2a-communication link, and receiving, (by the client agent), output data from the application executing on the application execution server and displaying on the client node the received output data without intervention by a network browser.
The invention further relates to a method of remotely interacting with an application program on a network server. The method comprises the steps of activating a hyperlink displayed by a network browser, accessing a hyperlink configuration file associated with the hyperlink, which includes an electronic address associated with the application program (the electronic address is accessible by a client agent), and executing the client agent to obtain the electronic address from the hyperlink configuration file and to issue a signal to the electronic address to launch the application program on the network server.
The invention also relates to a method of remotely launching an application program. The method comprises the steps of activating a hyperlink (which corresponds to the application program) that is displayed by a network browser, accessing, in response to the activation of the hyperlink, a hyperlink configuration file that identifies a client agent and a network location, both of which are associated with the application program, and executing the client agent to obtain the network location from the hyperlink configuration file and to issue a signal to the network location to launch the application program.
The invention additionally relates to a method of making a hypermedium page (displayed by a network browser) interactive. The method comprises the steps of activating a hyperlink, corresponding to an application program, on the hypermedium page, accessing a hyperlink configuration file, associated with the hyperlink, that identifies a client agent and a network address for a server storing the application program, starting the client agent identified in the hyperlink configuration file to obtain the network address from the hyperlink configuration file, establishing communications by the client agent with a server agent located on the server associated with the network address obtained from the hyperlink configuration file, and executing the application program on the server in response to a signal from the server agent that provides the signal in response to a communication from the client agent.

-2b-Brief Description of the Drawings Other features and benefits of the invention can be more clearly understood with reference to the specification and accompanying drawings in which:

WO 97!18518 PCT/1JS96/17937 Fig. 1 is a block diagram of an embodiment of the system of the invention; and Fig. 2 is a flow chart of the operation of system of the invention shown in Fig. 1.
Detailed Description of the Invention Referring to Fig. 1, and in brief overview, an embodiment of an interactive hypermedium system of the invention includes a client node 10, a network server node 18 and an application execution server node 24 interconnected by a communications link 32, herein referred to without any loss of generality as a network or web. Although only one client node 10, network server node 18 and application execution server node 24, are shown in Fig. 1 for clarity, an actual network may include many such nodes. Alternatively, the services provided by each of the nodes IO listed may be combined in one or more nodes. For example, the application execution server and the network server may in fact be the same node. In the extreme it is possible for all fixnctions to be performed by the same node, although such would not typically be the case.
In addition, although only one application 36 is shown on the application execution server 24, in reality, an application execution server node 24 typically includes many applications 36.
Each node on the network or web 32 includes a processor, which may vary significantly from other processors on the web 32 in terms of computing power and associated hardware. Further, the applications 36 available for execution on each node may be different.
A user on a client node wishing to run the application program 36 which is located on the application execution server 24 on the web 32 does so through a graphical user interface 40, which is herein referred to without any loss of generality as a hypermedium, located on the client node 10. The graphical interface is displayed on a graphical display device 42. Data is entered by the users through a mouse 46 and a keyboard 50 located on the client node 10.
The graphical display or page 44 which the user first views on the hypermedium 40 is referred to herein without any loss of generality as the home page or web page of the application 36. A
page 44 or home page of the hypermedium 40 includes a graphic link 48 or textual link 56 herein referred to without any loss of generality as a hyperlink. The web page is displayed by a process 64 referred to herein without any loss of generality as a network browser 64 executing on the client node I0.
The network browser 64 obtains the first page or web page 44 from a network server node 18 and displays the web page 44 on the hypermedium 40 for the user to view on the graphical display device 42. When the user selects an application program 36 to execute (by selecting a graphical 48 or textual 56 hyperlink using the mouse 46 or keyboard 50) the network browser 64 obtains a network configuration file 68 corresponding to the selected application 36 CA 02237333 1998-OS-11 ,~~~r;';__ : va'~~~
from a predetermined network server 18 and starts a client agent 72 which will communicate with the selected application 36. This will be discussed in more detail below.
The client agent 72 reads the configuration file 68 and establishes a communications link to a server agent 80 on the application execution server 24 specified by the configuration file 68. In one embodiment, the configuration file 68 includes the name of the application and the node location of the application 36 corresponding to the hyperlink 48, 56.
The configuration file may also contain optional information such aS
authentication or authorized user information. Server agent 80 performs the operations necessary (such as authentication) to permit the client agent 72 access to the application 36, and once access is permitted, starts l0 the application 36 requested by the user. Once the application 36 is executing on the application execution server, the application 36 communicates through the server agent 24 directly with the client agent 72 without intervention by the network browser 64. The client agent 72 is then responsible for receiving data from the user through the mouse 46 and keyboard 50 and transmitting it to the application program 36 on the application execution server 24. Similarly, the client agent 72 is responsible for receiving data from the application 36 on the application execution server 24 and displaying the data in an application display window 74 on the graphical display device 42 on the client node 10. It should be noted that the application display window 74 may be located within the boundaries or outside the boundaries of the hypermedium 40. When the application 36 is completed the server agent 80 2o instructs the client agent 72 to disconnect the communication link 32 between the client agent 72 and the server agent 80 and the server agent waits for the next connection_ Fig. 2 depicts the operation of the system in more detail. Initially, the client agent 72 is registered (Step 1) with the network browser 64 of the client node 10 and an entry is made in the network browser's registration file 88 (Fig. 1). This entry permits the network browser 64 to start the client agent 72 whenever a given file fype is requested by the hyperlink 48, 56 of the hypermedium 40. In this case the client agent 72 is designed to permit a user on the client node 10 to execute and interact with a remote application 36 on an application execution server node 24. The client agent 72 would be registered with the network browser 64 such that whenever a hyperlink 48, 56 requested the given file type (for example .RMT for remote 3o execution) from the network browser 64, the network browser 64 would start the client agent 72 which would permit remote execution and interaction with an application 36 resident on an application execution server 24. The invoking of the client agent 72 is discussed in more detail below.

Next, when a user wishes to execute an application from a hypermedium environment, for example a database program, the hypermedium 40 is displayed in a manner that is well known to those skilled in the art. When the user selects a hyperlink 48, 56 on the page 44 of the hypermedium (Step 2) by using the mouse 46 or keyboard 50 on the client node 10, a request is made to the network browser 64 for the corresponding data file (Step 3). In this example, the filetype {.RMT) is requested.
The network browser 64 obtains the corresponding configuration file 68 from the network server 18 which is specified in the file request made by the hyperlink 48, 56 to the network browser 64 (Step 4). The network browser 64 then compares the obtained configuration file 68 with the registration file 88 of client agent names which it maintains (Step 5). If the client agent 72 specified by the configuration file 68 is found in the registration file 88, the client agent 72 is started {Step 6).
The invoked client agent 72 reads the configuration file 68 (Step 7), and based upon the information in the configuration file 68, begins to establish a communication link with the server agent 80 on the application execution server 24 (Step 8), in this case the sales database application execution server (generally 24).
Considering the process of beginning the communications link of step 8 (Fig.
2) in more detail, communication begins with the server agent 80 monitoring communication activity on the network 32. At this point, no protocol assumptions are made by the server agent 80 beyond those necessary for the transport layer. Similarly, the client agent 72 also makes no assumption of the communications protocol beyond that required by the transport layer. Once the server agent 80 determines that a client agent 72 is attempting to communicate with it, the server agent 80 transmits a message to the client agent 72 indicating that service is available.
Once the client agent 72 determines that service is available on the application execution server node 24, the client agent 72 transmits a message to the server agent 80 indicating that it is ready to proceed with the communication protocol. Once the server agent 80 has responded that it to is ready to continue the communication protocol, the client agent 72 enables the protocol necessary for it to run the application 36. In response to the message from the client agent 72, the server agent 80 also enables the required protocol. The server agent 80 then transmits a message using the required protocol indicating that the client agent's request has been received and accepted.
In response the client agent 72 and the server agent 80 exchange a set of messages which negotiate the parameters under which communications will occur. Once negotiations are WO 97/18518 PCTlIJS96/17937 complete, the client agent 72 and the server agent 80 are able to communicate as necessary for the application 36 to be run by the user. Once the communications protocol has been established and the server agent 80 has authenticated the client agent 72 (Step 9) (for example determining that the user has permission to read and write to the database) the application 36 (Step 10) is run on the application execution server 24. At this point application 36 running on the application execution server 24 is communicating via the server agent 80 with the client agent 72 on the client node 10. The client agent 72 is now responsible for transmitting data input by the user using the mouse 46 and keyboaxd SO to the application 36 running on the application execution server 24.
Further, the client agent 72 is responsible for receiving data for display from the application 36 and displaying that data in the application window 74 on the graphical display device 42 of the client node 10.
It should be noted that the underlying presentation protocol which passes data to a transport layer such as TCP/IP must be capable of transfernng graphical information. Examples of such protocols which may be used for interactive hypermedia communication include public IS domain X-WINDOWS protocol and the proprietary ICA protocol of Citrix Systems Inc.
Thus the above described system permits a user on a client node 10, which may have very limited resources, to start and interact with an application program 36 located on another application execution server node 24. The application 36 then runs on the application execution server node 24 and the data is input and the results displayed on the client node I0.
-- These and other examples of the concept of the invention illustrated above are intended by way of example and the actual scope of the invention is to be determined solely from the following claims.

Claims (35)

-7- What is claimed is:
1. A method of making a hypermedium page interactive, said hypermedium page displayed by a network browser, comprising the steps of:
selecting a hyperlink on said hypermedium page displayed on a client node, said hyperlink providing a link to an executable application;
retrieving a hyperlink configuration file, from a network server to said client node, said hyperlink configuration file corresponding to said hyperlink and identifying a server that executes said application;
starting a client agent on said client node;
creating by said client agent a communication link to said application execution server identified by said hyperlink configuration file;
starting said identified application on said application execution server in response to said communication link; and receiving, by said client agent, output data from said application executing on said application execution server and displaying on said client node said received output data without intervention by network browser.
2. The method of claim 1 further comprising the step of displaying said output data from said application in an application display window on said client node.
3. The method of claim 1 further comprising the step of obtaining a hypermedium page from a network server prior to the step of selecting a hyperlink on said hypermedium page.
4. The method of claim 1 further comprising the step of starting a server agent on said application execution server prior to creating said communication link.
5. The method of claim 1 wherein said communications link uses a graphical presentation protocol.
6. A system of making a hypermedium page interactive, said hypermedium page displayed by a network browser, comprising:
a client node;
a hyperlink on said hypermedium page displayed on said client node;
a network server node, in communication with said client node;
a hyperlink configuration file on said server node, said configuration file corresponding to said hyperlink on said client node;
a client agent on said client node;
an application execution server node in communication with said client node and said network server node, said application execution server hosting an executable application; and a server agent on said application execution server node;
said client agent establishing a communications link with said server agent, in response to said configuration file, said application running in response to said communications link between said client agent and said server agent; and said client node displaying output data received from said executable application without intervention by said network browser.
7. The system of claim 6 wherein said client agent displays output data received from said executable application on said client node in an application display window located at said client node.
8. The system of claim 6 further comprising a process obtaining said hypermedium page from said network server and providing said hypermedium page to said client node.
9. The system of claim 6 wherein said hyperlink configuration file comprises:
an application name corresponding to said hyperlink; and an application server address corresponding to said hyperlink.
10. The method of claim 2 wherein said application display window is located within said boundaries of said hypermedium page.
11. The method of claim 2 wherein said application display window is located outside said boundaries of said hypermedium page.
12. The system of claim 7 wherein said application display window is located within said boundaries of said hypermedium page.
13. The system of claim 7 wherein said application display window is located outside said boundaries of said hypermedium page.
14. A method of remotely interacting with an application program on a network server, the method comprising:
activating a hyperlink displayed by a network browser;
accessing a hyperlink configuration file associated with said hyperlink, said hyperlink configuration file including an electronic address associated with said application program, wherein said electronic address is accessible by a client agent; and executing said client agent to obtain said electronic address from said hyperlink configuration file and to issue a signal to said electronic address to launch said application program on said network server.
15. The method of claim 14 further comprising:

establishing a communication link between said client agent and said application program without intervention by said network browser; and displaying in an application display window, without intervention by said network browser, data received by said client agent from said application program executing on said network server.
16. The method of claim 14 further comprising establishing, by said client agent without intervention by said network browser, communications with said application program using said electronic address obtained from said hyperlink configuration file.
17. The method of claim 14, wherein the executing step further comprises establishing communications with said application program by said client agent, said client agent transmitting signals to a server agent located at said electronic address in said hyperlink configuration file, said server agent responding to said received signals by launching and communicating with said application program.
18. A method of remotely launching an application program, the method comprising:
activating a hyperlink displayed by a network browser, said hyperlink corresponding to said application program;
accessing, in response to said activation of said hyperlink, a hyperlink configuration file, said hyperlink configuration file identifying a client agent and a network location both associated with said application program; and executing said client agent to obtain said network location from said hyperlink configuration file and to issue a signal to said network location to launch said application program.
19. The method of claim 18, wherein the accessing step further comprises the step of starting said client agent by said network browser.
20. The method of claim 18 further comprising establishing communications by said client agent with a server agent located at said network location identified in said hyperlink configuration file, wherein said client agent establishes said communications without intervention by said network browser.
21. The method of claim 20, wherein the executing step further comprises transmitting said signal from said client agent to said server agent, said server agent responding by starting said application program.
22. The method of claim 18 further comprising transmitting data representative of user inputs from said client agent to said application program without intervention by said network browser.
23. A method of making a hypermedium page interactive, said hypermedium page displayed by a network browser, comprising the steps of:
a) activating a hyperlink on said hypermedium page, said hyperlink corresponding to an application program;
b) accessing a hyperlink configuration file associated with said hyperlink, said hyperlink configuration file identifying a client agent and a network address for a server storing said application program;
c) starting said client agent identified in said hyperlink configuration file to obtain said network address from said hyperlink configuration file;
d) establishing communications by said client agent with a server agent located on said server associated with said network address obtained from said hyperlink configuration file; and e) executing said application program on said server in response to a signal from said server agent, said server agent providing said signal in response to a communication from said client agent.
24. The method of claim 23, wherein step d) is performed without intervention by said network browser.
25. The method of claim 23, wherein step e) is performed without intervention by said network browser.
26. The method of claim 23, wherein step c) further comprises starting said client agent by said network browser upon a successful match of an entry in said hyperlink configuration file with an identifier associated with said client agent in a registration file accessible by said network browser.
27. The method of claim 23, wherein said client agent operates independently of said network browser after said network browser starts said client agent.
28. The method of claim 14 further comprising registering said client agent with said network browser.
29. The method of claim 15 further comprising employing a presentation protocol for communication over said communication link.
30. The method of claim 18 further comprising registering said client agent with said network browser.
31. The method of claim 30 further comprising employing a presentation protocol for communication over said communication link.
32. The method of claim 23 further comprising f) registering said client agent with said network browser.
33. The method of claim 23 further comprising f) employing a presentation protocol for communication over said communication link.
34. The method of claim 18 further comprising:
establishing a communication link between said client agent and said application program without intervention by said network browser; and displaying in an application display window, without intervention by said network browser, data received by said client agent from said application program executing on said network server.
35. The method of claim 23 further comprising:
f) transmitting data by said server agent to said client agent and said application program without intervention by said network browser; and g) displaying in an application display window, without intervention by said network browser, data received by said client agent from said server agent.
CA002237333A 1995-11-13 1996-11-08 A method and apparatus for making a hypermedium interactive Expired - Lifetime CA2237333C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/556,623 1995-11-13
US08/556,623 US6088515A (en) 1995-11-13 1995-11-13 Method and apparatus for making a hypermedium interactive
PCT/US1996/017937 WO1997018518A1 (en) 1995-11-13 1996-11-08 A method and apparatus for making a hypermedium interactive

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CA2237333A1 CA2237333A1 (en) 1997-05-22
CA2237333C true CA2237333C (en) 2003-05-06

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EP (2) EP1324231A3 (en)
JP (1) JP3866768B2 (en)
KR (1) KR100534816B1 (en)
AT (1) ATE232320T1 (en)
AU (1) AU709436B2 (en)
CA (1) CA2237333C (en)
CZ (1) CZ146698A3 (en)
DE (1) DE69626129T2 (en)
DK (1) DK0862765T3 (en)
ES (1) ES2187682T3 (en)
IL (1) IL124414A (en)
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PL (1) PL181472B1 (en)
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