> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # Properties window > Edit element parameters in the Properties window of FlexiLayout Studio, from single-line text and drop-down lists to fuzzy intervals and recognition areas. The **Properties** pane contains information about the currently selected element. This can be a page, tree node, or a marked-up element of an image. You can edit a parameter displayed in this pane by clicking its value in the **Value** column. The way a value is edited depends on the parameter type. ## Uneditable parameters Screenshot of an uneditable parameter row in the Properties pane, where the read-only value Pages with reference Classes is shown in gray and can only be selected and copied. The values of these parameters cannot be changed in the **Properties** pane. They are displayed in gray and can only be selected and copied. Uneditable parameters include element types, the number of child elements, and classification statistics. ## Single-line text Screenshot of a single-line text parameter in the Properties pane, where the Name value is edited in an unconstrained single-line text box. These parameters are edited in a single-line, unconstrained text box. New values are checked when you try to set them. If a new value is incorrect, an error message appears in the text box, unless you are editing an element's name. Incorrect element names are replaced with the default value. ## Multiple-line text Screenshot of a multiple-line text parameter in the Properties pane, where an ellipsis button opens a multi-line text editor showing several lines of comment text. The text box always contains the first line of a parameter's text. If there is more than one line of text, the Ellipsis button button appears in the text box. To edit a multiple-line parameter, open the text editor by clicking the Ellipsis button button. The value is set when you click the Ellipsis button button again, or when you click another interface element. ## Drop-down list Screenshot of a drop-down list parameter in the Properties pane, where the Definition method value is chosen from a list of From Database, From File, and Manual options. The value of these parameters can be selected from a drop-down list. You can type a value, but it is ignored if it does not match any of the items in the list. ## Complex parameters Screenshot of a complex parameter in the Properties pane, where the Date format value combines several pre-determined values selected from a drop-down list and separated by a vertical line. Complex parameters are edited by selecting items from a drop-down list. The value of a complex parameter can be made up of several pre-determined values. The text box contains the selected values separated by a vertical line. You can type values, but any incorrect values are ignored when the parameter value is set. ## Integers Screenshot of an integer parameter in the Properties pane, where the Number of hypotheses value is edited in a text box with spinner buttons for increasing and decreasing the value. Parameters of this type are edited in a text box with buttons for increasing and decreasing the value. You can type values, and new values are checked against a range of acceptable values. A notification appears if a value is incorrect. ## Numbers Screenshot of a number parameter in the Properties pane, where the Null hypothesis quality value is being edited and an Unacceptable character notification warns that only a number from 0 to 1 is allowed. Parameters of this type are edited in a standard text box. New values are checked against a range of acceptable values. A notification appears if a value is incorrect. ## Percentages Screenshot of a percentage parameter in the Properties pane, where the Percentage of non-alphabet characters value is shown followed by a percent sign. The editor for percentages is the same as the editor for numbers, except the value is always followed by a percent sign. ## Distance in custom units This editor looks exactly the same as the numbers editor. The value is updated if you change the measurement unit. ## FlexiLayout element Screenshot of a FlexiLayout element parameter in the Properties pane, where the Table block value references Blocks.InvoiceTable and an ellipsis button opens a dialog for selecting a tree node. To edit parameters of this type, click the Ellipsis button button next to the text box. A dialog box for selecting a tree node opens. Incorrect element names are ignored. ## File Screenshot of a file parameter in the Properties pane, where the File Name value MyFile.txt is set and an ellipsis button opens a dialog for selecting a file. To edit these parameters, click the Ellipsis button button next to the text box. A dialog box for selecting a file opens. Manually specified values are not checked. ## Recognition language Screenshot of a recognition language parameter in the Properties pane, where the Language value lists English and Russian separated by a vertical line and an ellipsis button opens a dialog for selecting recognition languages. Click the Ellipsis button button next to the text box to edit parameters of this type. A dialog box for selecting recognition languages opens. The text box contains languages separated by vertical lines, and you can type language names. Incorrect language names are ignored. ## Fuzzy interval Screenshot of a fuzzy interval parameter in the Properties pane, where the Character count value holds the interval { 0, 0, INF, INF } and an ellipsis button opens its editor. To edit parameters of this type, open the editor by clicking the Ellipsis button button next to the text box. You can type values. New values and their formats are not checked, and incorrect values are ignored. ## Recognition area Screenshot of a recognition area parameter in the Properties pane, where the Pre-recognition area value lists PageLeft, PageTop, PageRight, and PageBottom and an ellipsis button opens a dialog for specifying recognition area properties. Click the Ellipsis button button next to the text box to edit parameters of this type. A dialog box for specifying recognition area properties opens. Values cannot be typed. ## Named parameter Screenshot of a named parameter row in the Properties pane, where the FlexiLayout named parameters value shows NamedParameter of Int type set to 32 and an ellipsis button opens the named parameters editor. Click the Ellipsis button button next to the text box to open the properties dialog box of the FlexiLayout, batch, or page, where you can edit named parameters. For more information, see [Named parameters](/flexi-capture/fls/settings/named-param). ## Value validation In most cases, all user-specified values are checked. Incorrect values are either changed back to the default value or displayed in the text box with an error notification. A separate dialog box with an error message is not displayed in these cases. ## Hidden and nested parameters Parameters that have no meaning for the current properties of the element are hidden. For example, the **Search text**, **Database connection string**, and **File name** parameters cannot be displayed at the same time. One of these parameters is selected based on the search algorithm specified in the **Static Text** parameter, and the other two are hidden. The names of child parameters are indented relative to the name of the parent parameter.