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rtw_4.5:netfeed_engine_operation [2013/03/24 15:31]
Philip Wittamore [RTW Netfeed Engine Operation]
rtw_4.5:netfeed_engine_operation [2018/08/04 20:08]
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- 
-======Netfeed Engine Operation====== 
- 
- 
-This section covers the following topics: ​ 
- 
-  * [[#Login]] 
-  * [[#​Subscribe]] 
-  * [[#Quick Quote]] 
-  * [[#Quote Table]] 
-  * [[#Quote Wizard]] 
-  * [[#RTW Functions]] 
-  * [[#​Favorites]] 
-  * [[#Status Window Overview]] 
-  * [[#​Interface Preferences]] 
-  * [[#​Stop/​Restart Engines]] 
-  * [[#​Pause/​Resume Data]] 
-  * [[#​Updates]] 
-  * [[#Monitor Watch List]] 
-  * [[#Record Info]] 
- 
-To subscribe and publish data in Microsoft Excel, RTW provides a COM Server (rts.exe) that works in conjunction with Microsoft Excel’s RTD function (available only in Excel 2002 and higher; see the Microsoft Excel Help for more information on RTD and COM automation). The RTW COM Server can also be used with custom stand-alone applications. For more information about the RTW COM Server and the RTW COM Interface, see [[rtw_com_interface|RTW COM Interface Introduction]]. 
- 
-===== Login===== 
- 
-Prior to operating the RTW Netfeed engine, you need to log into the Netfeed data distribution system by Datacode, Inc.  
-Select **Vistasource -> Netfeed -> Login** to open the login dialog. Enter your username and password and click **OK**. ​ 
-<​note>​You can edit the configuration settings for the RTW Netfeed engine to automate the login process. See login on the Netfeed tab in the [[rtconfig_editor|rtconfig editor]] for more information.</​note>​ 
- 
-<note important>​To purchase a Netfeed Login, see [[https://​www.datacodeinc.com/​store/​purchase/​purchase.asp?​product=aplxware&​vid=vistasrc|Datacode Inc.]]</​note>​ 
- 
- 
- 
-===== Subscribe ===== 
- 
- 
-RTW offers three menu options that facilitate building an RTD formula for subscribing to data. These options are:  
- 
-  * [[#Quote Wizard]] – Steps through the process of building an RTD formula ​ 
-  * [[#Quote Table]] – Creates a table of RTD formulas referencing record and field names in a spreadsheet ​ 
-  * [[#Quick Quote]] – Provides an easy way to automatically build a RTD formula 
-  ​ 
-The generic syntax for Microsoft Excel RTD is as follows: ​ 
- 
-<​code>​ 
-=RTD(ProgID,​ server, topic1, [topic2], …)  
-</​code>​ 
- 
-When using RTW to subscribe to data, the RTD function uses the following arguments: ​ 
- 
-<​code>​ 
-=RTD(ProgId,​ server, command, engine, servicename,​ recordname, fieldname1, […, fieldnameN]) ​ 
-</​code>​ 
- 
-The arguments have the following meaning: ​ 
- 
-|**ProgID** | The name of the RTW RTD Server: Vistasource.RtdServer | 
-|**Server** | This argument remains null. | 
-|**Command** |“rt”, to indicate the subscribe command | 
-|**Engine** | The name of the engine, vsnf. |  
-|**Servicename** | The name of the service to which you are subscribing. | 
-|**Recordname** | The name of the record to subscribe to. | 
-|**Fieldname1,​…** | The name of the first field, such as BID or ASK. | 
-|**FieldnameN** | The name of the last field.| 
- 
-//Example of an RTD function for subscribing//​ 
-  
-The following formula subscribes to the Microsoft ASK price via the RTW Netfeed engine with the MARKETFEED service: 
-  
-<​code>​=RTD("​Vistasource.RtdServer",,"​rt","​vsnf","​MARKETFEED","​MSFT",​ "​ASK"​)</​code>​ 
- 
-//Example of an RTD function for subscribing to multiple fields// 
- 
-To retrieve multiple field values with one formula, the RTD function would need to return an array of data. However, RTD does not support this functionality (see [[http://​support.microsoft.com/​kb/​286258|Microsoft KB article 286258]]). To work around this limitation, the RTW wrapper function PARSE_DATA can be used. This function "​parses"​ the string array of incoming data. The Quote dialogs will automatically use the PARSE_DATA function when creating array formulas. See [[#RTW Functions]] for more information about PARSE_DATA and other wrapper functions. 
- 
-The following formula subscribes to the Microsoft ASK and BID prices in real-time via the RTW Netfeed engine with the MARKETFEED service: ​ 
- 
-<​code>​=PARSE_DATA(RTD("​vistasource.rtdserver",,"​rt","​vsnf","​MARKETFEED","​MSFT","​ASK","​BID"​))</​code>​ 
-  
-  
-===== Quote Wizard ===== 
- 
-The Quote Wizard steps through the process of building an RTD formula and subscribing to data provided by the data distribution system. ​ 
- 
-Select **Vistasource -> Netfeed -> Quote Wizard** to start the Quote Wizard. ​ 
- 
-The Quote Wizard consists of a total of five screens. Each screen details the steps of building a formula, displaying the status of the formula as you build it. 
- 
-By choosing multiple record and field names, the Quote Wizard also allows you to create, format, and determine the layout of a "quote table." ​ 
- 
-===== Quick Quote ===== 
- 
-This option provides an easy way to automatically build an RTD formula which subscribes to fields of a single record. ​ 
- 
-Select **Vistasource -> Netfeed -> Quick Quote** to create a subscribe quote. The Quick Quote dialog box provides an easy way to automatically build a RTD formula which subscribes to fields of a single record. ​ 
- 
-The RTW Netfeed Quick Quote dialog box contains the following options: 
- 
-|**Cell Range** | Enter a start or cell range for the formula’s output. To select a cell directly in the worksheet without having to type its reference, click on the icon next to the entry field.| 
-|**Orientation** | The orientation must be horizontal.| 
-|**Build As Array Formula** | A single RTD array formula can be created which returns values for all the fields of the record. Each record will have its own RTD formula. Turn this option off to create individual formulas for each field. ​ \\ **Note:** If Build as Array Formula is selected, the wrapper function PARSE_DATA is used. To edit an array formula, select the entire output range, place the cursor in the edit line, edit, and then press Ctrl-Shift-Return. If an attempt is made to edit a single cell in the range, a message box displays indicating that the cell cannot be edited, because it is the output of an array formula. For more information on PARSE_DATA, see [[#RTW Functions]].| 
-|**Engine** |The engine name is vsnf.| 
-|**Service** | Select the service, e.g. MARKETFEED.| 
-|**Record** | Enter the record name. Clicking on the control on the right displays a history list with your previous choices. The list is stored in a file called [Engine name]_history.txt. **Note:** In Windows 7, this history file is located in ''​%USERPROFILE%\AppData\Roaming\Vistasource\RTW''​. In Windows XP, the file is located in ''​%USERPROFILE%\Application Data\Vistasource\RTW''​. If the AppData or Application directory does not exist the file is located in ''​C:​\''​.| 
-|**Fields to Retrieve** | Enter the names of the fields you want to subscribe to, then press RETURN or click the Add Field button after each field name to add the field to the list box.| 
-|**Remove Selected Field** | To remove fields, select a field and then click on the option button.| 
-|**Up and Down Arrows** | To rearrange the order of the fields, click on the field name and move it with the arrows.| 
-|**Field List** | The RTW Netfeed Field List dialog box displays all valid fields for the specified record. Select the required field from the Available Fields list box and click **Add**. The field name is added to the Selected Fields list box. To remove a field name, select the field and click **Remove**. Once the required fields are selected, click **OK** to return to the RTW Netfeed Quick Quote dialog box.| 
-|**Add to Favorites** | To add frequently used records to a list of favorites, select a record and click the option button. To check which records have been added in previous and current sessions, click **View Favorites** to access the RTW Netfeed Records - Favorites List.| 
- 
-Click **OK** to insert the formula in your workbook. 
-  
-===== Quote Table ===== 
-  
-This option allows you to create a table of RTD formulas which reference record and field names in a spreadsheet. ​ 
- 
-Organize your spreadsheet with record names in a column and field names in an adjacent row. Select **Vistasource -> Netfeed -> Quote Table** to display the RTW Netfeed Quote Table dialog box. 
- 
-The RTW Netfeed Quote Table dialog box contains the following options: 
- 
-|**Cell Range** | Enter the cell range for your table. Cells can be selected directly in the worksheet without having to type their reference by clicking on the icon next to the entry field. The desired range can also be selected before launching the dialog box.| 
-|**Build As Array Formula** | A single RTD array formula can be created which returns values for all the fields of the record. Each record will have its own RTD formula. Turn this option off to create individual formulas for each field. ​ \\ **Note:** If Build as Array Formula is selected, the wrap-per function PARSE_DATA is used. To edit an array formula, select the entire output range, place the cursor in the edit line, edit, and then press Ctrl-Shift-Return. If an attempt is made to edit a single cell in the range, a message box displays indicating that the cell cannot be edited, because it is the output of an array formula. For more information on PARSE_DATA, see [[#RTW Functions]].| 
-|**Engine** | The engine name is vsnf.| 
-|**Service** | Select the service, e.g. MARKETFEED.| 
-|**Record Name Location** | The record names can only reside in a column.| 
-|**Use Cell Addresses for Rows/​Columns** | Check this option to use the cell references in the formula instead of the record and field names. This option is turned on by default, and ensures that the formula stays valid if the record or field names are changed. If this option is turned off, the actual record and field names will become part of the formula.| 
- 
-Click **OK** to insert the RTD formulas in your workbook. ​ 
- 
- 
-===== RTW Functions ===== 
-  
- 
-RTW specific functions are added to Microsoft Excel upon installation. They can be accessed by selecting **Formulas -> Insert Functions -> Select a Category -> Vistasource RTW**. ​ 
- 
-In versions prior to Microsoft Excel 2007, select **Insert -> Function** in the menu bar to display the “Insert Function” dialog box. Select the **Vistasource RTW** category to display the RTW functions. ​ 
- 
-==== Wrapper Functions ==== 
- 
- 
-The following functions call the RTD function with the required default arguments, plus the given arguments. In this way, redundant arguments are hidden, exposing only the data that is important to you.  
- 
- 
-|**FUNCTION**|RTS| 
-|**ARGUMENTS** | Engine, service, record, field1, field2, … fieldN| 
-|**EXAMPLE** | <​code>​=RTS("​vsnf","​MARKETFEED",​ "​MSFT",​ "​ASK"​)</​code>​| 
-|**DESCRIPTION** | Subscribe to data using the specified engine| 
-|**NOTES** | Engine,​Service,​Record,​Field1 are obligatory. The maximum number of fields is 51 (24 for Excel versions prior to 2007).| 
- 
- 
-|**FUNCTION** | RTS_NF| 
-|**ARGUMENTS** | Service, record, field1, field2, … fieldN | 
-|**EXAMPLE** | <​code>​=RTS_NF("​MARKETFEED",​ "​MSFT",​ "​ASK"​)</​code>​ | 
-|**DESCRIPTION** | Subscribe to data using the RTW Netfeed engine| 
-|**NOTES** | Service,​Record,​Field1 are obligatory. The maximum number of fields is 51 (24 for Excel versions prior to 2007).| 
- 
- 
- 
-==== PARSE_DATA and PACKAGE_DATA ​ ==== 
- 
-The function PARSE_DATA facilitates some of the limitations of RTD when subscribing to multiple fields in the same RTD formula ​ (see [[http://​support.microsoft.com/​kb/​286258|Microsoft KB article 286258]]) 
- 
- 
-|**FUNCTION**|PARSE_DATA| 
-|**ARGUMENT**|An Excel-style string| 
-|**EXAMPLE**| <​code>​{=PARSE_DATA(RTS_NF("​MARKETFEED","​MSFT",​ "​BID",​ "​ASK"​))}</​code>​| 
-|**DESCRIPTION**|Evaluates an Excel-style string| 
-|**NOTES**|For PARSE_DATA to work properly, the "​Decimal separator"​ in Microsoft Excel needs to be set to "​."​ (period), and the "​Thousands separator"​ needs to be ","​ (comma). To verify these settings, please check **Excel Options -> Advanced -> System Separators**. \\  To edit an array formula, select the entire output range, place the cursor in the edit line, edit, and then press Ctrl-Shift-Return. If an attempt is made to edit a single cell in the range, a message box displays indicating the cell cannot be edited because it is the output of an array formula.| 
- 
- 
-The PACKAGE_DATA function can be used together with the PARSE_DATA function to pass an array of field names to the RTD function. 
- 
-|**EXAMPLE**|<​code>​=PARSE_DATA(RTS_NF("​MARKETFEED","​MSFT",​ PACKAGE_DATA(A1:​A2)))</​code>​| 
-|**DESCRIPTION**|In this case, A1 contains BID and A2 contains ASK| 
- 
- 
- 
- 
-===== Favorites ===== 
- 
-The **RTW Netfeed Records – Favorites List** dialog box allows you to manage your favorites list. 
- 
-This list displays previously added selections of records and fields. To delete 
-a selection, mark the item and click **Delete**. ​ 
- 
-To modify an item, click **Modify List** to access the RTW Netfeed Favorites List dialog box.  
- 
- 
-===== Modify Favorites ===== 
- 
-The RTW Netfeed Favorites List dialog box allows you to add, delete, and update your list of favorite records or pages. To access this list, click **View Favorites** in the Quick Quote or Publish dialog boxes, or select the dialog box launcher in the **Vistasource -> Netfeed** group. ​ 
- 
-The RTW Netfeed Favorites List dialog box contains the following fields: 
- 
-|**Favorites List** | Displays all the records you have previously added. Add or delete records in this list or update them by modifying the associated fields: \\ <​html><​br/><​ul><​li>​To add a record, enter the name of the record, select the fields via the entry fields on the right, and click <​b>​Add</​b>​.</​li><​li>​To delete a record, select the record and click <​b>​Delete</​b>​.</​li><​li>​To update a record, select the record in the <​b>​Favorites List</​b>​. All relevant entry fields will automatically fill in. Make your modifications and click <​b>​Update</​b>​.</​li></​ul></​html>​| 
-|**Record** | Enter a name for the record you want to add or choose from the list of favorites to update.| 
-|**Fields to Retrieve** | Enter the names of the fields you want to retrieve. Click on the icon next to the entry field to display the list of available fields. Press **RETURN** or click the **Add Field** button after each field name to add the field to the list box. To remove a field, select it and click **Remove Selected Field**.| 
-|**Up and Down Arrows** | Rearrange the order of the fields by clicking on one and moving it with the arrows.| 
-|**Field List**|The RTW Netfeed Field List dialog box displays all valid fields for the specified record. Select the field you are interested in from the Available Fields list box and click **Add**. The field name is added to the **Selected Fields** list box. To remove a field name, select the field and click **Remove**. After all fields have been created or deleted, click **OK** to return to the list of fields in the RTW Netfeed Favorites List dialog box.| 
- 
-===== Status Window Overview ===== 
- 
-The RTW Status Window displays messages about the RTW server, RTSHARE and any installed engine(s). The information is divided into the product components (RTW, RTSHARE or engine(s) ) and message types (errors, warnings, etc). 
- 
-The top buttons of the window represent the components that have messages available. The RTW  button represents the RTW server and is always displayed. When an engine is started or RTSHARE is used, a button for that component will be added to the toolbar. To view the messages for a component, click on its button. 
- 
-For each component, there are tabs categorizing the different types of messages that the server or engine might send to the Status Window. For example, the tabs for the RTW component are: Information,​ Warnings, and Errors. Each engine and RTSHARE has its own message types. To switch between message types, click on the appropriate tab. 
- 
-The Status Window will automatically switch to a component when either 1) initialization of the component has occurred or 2) an error occurred for that component. 
- 
-<note tip>If necessary, you can copy lines in any of the tabs to the clipboard. To select lines, either left-click on one or more lines in the tab, or right-click in the tab and choose **Select All** from the menu (alternatively,​ Ctrl+A will select all lines and Ctrl+D will unselect all lines). To copy the selected lines, type Ctrl+C or use the right-click menu and choose **Copy**. Once copied, the lines are ready to be pasted into your favorite editor or email program.</​note> ​ 
- 
-  ​ 
-==== RTW Button ==== 
- 
- 
-Click on the RTW button to display the following tabs: Information,​ Warning, Errors. 
- 
-|**Information**| Provides data about RTW , such as version, network status messages, type of engine, directory paths etc.| 
-|**Warnings**| Lists warnings about files not found or other problems| 
-|**Errors**| Displays error messages| 
- 
- 
-==== Netfeed Button==== 
- 
- 
-Click on the Netfeed button to display the following tabs: General, Requests, LAN Faults, Async Faults. 
- 
-|**General**| Provides licensing and connection information| ​ 
-|**Requests**| Displays information about record requests| 
-|**LAN Faults**| Displays errors about connections to the data servers| 
-|**Async Status**| Displays asynchronous status messages sent by the Netfeed Server| 
- 
- 
- 
- 
- 
- 
-===== Cell Status Messages ===== 
- 
-When information about a real-time value is not available, the cell displays #N/A. When an Excel spreadsheet file containing RTD formulas is opened, all real-time values display as #N/A until the data distribution system delivers the initial value and the cells are updated. 
-  
-Similarly, when editing, copying or cutting/​pasting a real-time formula, the cell displays #N/A until the value of the cell changes and the cell is updated. A cell which references a cell with a #N/A status message also displays #N/A. 
-  
-If a cell displays #VALUE!, the formula is incorrect. For instance, if an invalid field name is entered, the cell displays #VALUE! and the status window displays information from the data distribution system about the incorrect field name. A cell also displays #VALUE! if it references another cell which contains #VALUE! or #N/A or no data. 
- 
-===== Show/Hide Status Window ===== 
- 
-You can show or hide the RTW Status Window by selecting **Vistasource -> Info -> Show/Hide Status Window**. ​ 
- 
-By default, the status window first appears when a real-time RTW request is made. Real-time requests are made with the "​rt"​ and "​rtinsert"​ commands in the RTD function or in the RTW COM server. 
- 
-<​note>​The status window will automatically close when no engines are running. An engine will shutdown if it is not handling any more real-time requests. </​note>​ 
- 
-The debug level and display rules for the RTW Status Window can be changed in the Status Window section of the Generic tab of the Rtconfig Editor. See section [[#Generic Configuration Options]] for detailed information about the different methods of editing the RTW configuration options. 
- 
-===== Interface Preferences ===== 
- 
-The Interface Preferences are used to customize the behavior of the RTW user interface as well as setting default values for the RTW Netfeed engine dialog boxes. 
- 
-Select **Vistasource -> Settings -> Interface Preferences** to display the RTW Preferences dialog box.  
- 
-This dialog box contains a generic preference and a Netfeed tab. On these tabs, defaults can be selected for the user interface dialogs such as Quick Quote. ​ 
- 
- 
-<​note>​The preferences are stored in a file which RTW will read when it starts. \\ In Windows 7, the preferences file is in %USERPROFILE%\AppData\Roaming\Vistasource\RTW\preferences. ​ \\ In Windows XP, the preferences file is in %USERPROFILE%\Application ​ 
-Data\Vistasource\RTW\preferences. In both operation systems, this file can be read in any text editor, such as Notepad or Wordpad.</​note>​ 
- 
-===== Generic Tab  - Interface Preferences ===== 
- 
-On the Generic tab, you can select the options **Build Formulas as Arrays** and **Don’t show splash screen on startup**. 
- 
-==== Build Formulas as Arrays ==== 
- 
-When this option is on, all Quote dialog boxes will create array formulas by default. 
- 
-<​note>​The wrapper function PARSE_DATA is used to work around RTD’s array formula limitation. See [[#RTW Functions]] for more information.</​note>​ 
-  
-==== Don't show splash screen on startup ==== 
- 
-Turn this option on to suppress the Vistasource RTW splash screen when you launch Microsoft Excel. The option is off by default. 
- 
-===== Netfeed Tab – Interface Preferences ===== 
- 
-The Netfeed tab contains the option **Default Service**. 
- 
-==== Default Service ==== 
-  
-Set the default subscribe service for the RTW Netfeed engine. The selected subscribe service will automatically be the default service in the Quote dialog boxes. 
- 
-===== Stop/​Restart Engines ===== 
-  
-Select **Vistasource -> Stop/​Restart Engines** to close the connection to the data distribution system without exiting your spreadsheet. If you choose to stop an engine while the spreadsheet contains active real-time cells, the engine will restart automatically. You can choose to stop and restart a specific engine or all real-time engines. ​ 
- 
-==== Pause/​Resume Data ==== 
-  
-Select the **RTW Pause Data** button to pause the flow of real-time data. You cannot manually update real-time values in this mode. This option lets you work in your spreadsheet without interruption from data updates. When **Pause Data** is selected, the menu option **Refresh Data Now**, which initiates a manual update, is not available and the **Updates** submenu is disabled (grayed out). 
-  
-Select the **RTW Resume Data** button to resume the flow of real-time data. 
-  
-<​note>​The location of the **Pause Data** and **Resume Data** buttons depends on your version of Microsoft Excel. In Microsoft Excel 2007 they are located on the left side of the Vistasource tab of the Excel Ribbon. In versions prior to Microsoft Excel 2007, the buttons are located on a separate command bar under the menu bar.</​note>​ 
-  
-===== Updates ===== 
- 
-Select **Vistasource -> Updates** to display the various update options which let you alter the flow of real-time data without closing the engine. You can pause and resume your data flow, and set the update rate according to your needs. You can choose to have the data updated as it changes, manually update your data, or select various intervals including custom intervals for automatic updates. Internally, this sets the Excel application option RTD.ThrottleInterval. ​ 
- 
-==== Manual Updates Only ==== 
- 
-Select **Vistasource -> Updates -> Manual Updates Only** to suspend automatic updates of data. Any cells containing real-time formulas display the value that was current when you chose this option, but the values no longer continue to update automatically. If you want to restart automatic updates, choose one of the other update rate options such as **As Data Changes**. ​ 
- 
-By selecting **Vistasource -> Refresh Data Now** you initiate a manual update of the real-time cells. 
- 
-==== Refresh Data Now ==== 
-  
-Select **Vistasource -> Refresh Data Now** to force a manual update when **Vistasource -> Updates -> Manual Updates Only** is selected, or when the Update Rate is 5 seconds or more. Otherwise, the option is unavailable (grayed out). 
- 
-When data is paused by selecting **Vistasource -> Pause Data**, the option Refresh Data Now is not available. ​ Select **Vistasource -> Resume Data** to resume the flow of real-time data once paused. 
- 
-==== Rate ==== 
-  
-This option allows the setting of the rate in which data gets updated. It contains the following settings: 
- 
-=== As Data Changes (Default Setting) === 
-Select **Vistasource -> Updates -> Rate -> As Data Changes** to have the engine update your data as the values change. 
- 
-=== Update Rate (n Second Interval) === 
- 
-Select **Vistasource -> Updates -> Rate -> n Second Interval** to update real-time values at preset intervals. n represents the number of seconds between updates. Available settings are 1, 5, 10, 30, 60 seconds. ​ 
- 
-=== Update Rate (Custom Interval) === 
- 
-Select **Vistasource -> Updates -> Rate -> Custom Interval** to define a custom interval between updates. Custom intervals are measured in seconds. 
- 
-===== Monitor Watch List ===== 
-  
-Select **Vistasource -> Info -> Monitor Watch List** to display the RTW Monitor Watch List dialog box. This dialog shows the records and fields you are currently subscribed to.  
- 
-The RTW Monitor Watch List dialog box contains the following fields: 
- 
-|**Engine**|The engine is vsnf.| 
-|**Service**|Select a service from the Service pull-down menu. | 
-|**Number of Live Records**|The number of live records is displayed. | 
-|**Record Name**|The list of records appears in the list box. | 
-|**Field Name/Field ID**|The list of the active fields and their field ID. | 
-  
-Select **Close** to return to the work sheet. ​ 
-  
-Items from the Watch List will automatically unsubscribe when you remove the RTD formula. To flush all records, select **Vistasource -> Stop/​Restart Engines**. ​ 
- 
- 
-===== Record Info =====  
-Select **Vistasource -> Info -> Record Info** to view the current values of all valid fields (FIDs) for a given record (RIC) from any available DDS (Data Distribution Server) such as MARKETFEED. In case several engines are installed, you can access all available engines from a single Record Information dialog box.  
- 
-The RTW Record Information dialog box contains the following fields: 
- 
-|**Engine**|The engine is vsnf.| 
-|**Service**|Select a service from the Service drop-down menu. | 
-|**Record**|Type the name of the record (RIC) for which you want to retrieve values in the Record (RIC) entry field. | 
-|**Get Record**|This button is available when engine, service and record have been specified. Click this button to get the record information. ​ | 
- 
-Select **Close** to return to the work sheet. ​ 
-  
- 
- 
- 
- 
- 
- 
- 
-