Custom System Properties

A number of Java system properties can be set in the application to influence its behavior. For information about how to do this, see the Setting a system property section.

Table 1. Custom System Properties
Property	Allowed values	Default value	Purpose
`com.oxygenxml.disable.http.protocol.handlers`	`true` or `false`	`false`	By default, Oxygen XML Developer uses the open source Apache HTTP Client software for HTTP(S) connections. If set to `True`, the default Java Sun HTTP(S) will be used instead. You will also lose WebDAV support and possibly other related features.
`com.oxygenxml.default.options`	A URL-type relative or absolute path.	N/A	Provides the path to an XML file containing default application options. For more details, see Customizing Default Options.
`com.oxygenxml.customOptionsDir`	A file system absolute path pointing to a folder.	N/A	Sets a different folder to be used by the application to load and save preference files. The default location where the options are saved varies according to the operating system. See Importing / Exporting Global Options.
`com.oxygenxml.ApplicationDataFolder` (Windows only)	A file system absolute path pointing to a folder.	%APPDATA%	When the application runs on Windows, you can set this property to change the location where the application considers that the `APPDATA` folder is located.
`com.oxygenxml.editor.frameworks.url`	An URL-type absolute path.	OXYGEN_DIR \frameworks	Changes the folder where the application considers that the main frameworks are installed. It has the same effect as changing the custom frameworks directory value in the Locations Preferences page.
`com.oxygenxml.MultipleInstances`	`true` or `false`	`false`	If set to `true`, multiple instances of the application are allowed to be started.
`com.oxygenxml.xep.location`	A file system absolute path pointing to a folder.	N/A	Points to a folder where RenderX XEP is installed. Has the same effect as configuring XEP in the FO Processors Preferences page.
`com.oxygenxml.additional.classpath`	A list of JAR-type resources separated by a classpath separator.	N/A	An additional list of libraries to be used in the application's internal class loader in addition to the libraries specified in the lib folder.
`com.oxygenxml.user.home` (Windows only)	A file system absolute path pointing to a folder.	USERPROFILE Folder	Overwrites the user home directory that was implicitly detected for the application.
`com.oxygenxml.use.late.delegation.for.author.extensions`	`true` or `false`	`true`	All Java extensions in a document type configuration are instantiated in a separate class loader. When true, the JAR libraries used in a certain document type configuration will have priority to resolve classes before delegating to the parent class loader. When false, the parent class loader will take precedence.
`com.oxygenxml.stack.size.validation.threads`	The number of bytes used for validation threads.	510241024	Some parts of the application (validation, content completion) that use the Relax NG parser sometimes require a larger Thread stack size in order to parse complex schemas. The default value should be more than enough.
`com.oxygenxml.jing.skip.validation.xhtml.data.attrs`	`true` or `false`	`true`	By default, the Relax NG validation was configured to skip validation for XHTML attributes that start with "data-", which should be skipped from validation according to the XHTML 5 specification.
`com.oxygenxml.report.problems.url`	User defined URL	N/A	The URL where a problem reported through the Report Problem dialog box is sent. The report is sent in XML format using the `report` parameter with the POST HTTP method.