3. Before writing your first configuration
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## 3. Before writing your first configuration

1. Do not forget to temporarily disable the Quick Start and Schema caches by unchecking the corresponding checkboxes in Options → Preferences, Advanced|Cached Data section. More information about these caches in Section 5.12.1, “Cached data options” in XMLmind XML Editor - Online Help.

   ### Warning

   If you forget to do this, XXE will fail to see your configuration and/or may not see the changes you make to the schema referenced by your configuration.

2. Using menu item Options → Install Add-ons, download and install the add-on called "XMLmind XML Editor Configuration Pack". This add-on contains important support files (e.g. `configuration.xsd`) for use when writing a configuration.

3. Start XXE with a console in order to see low-level error messages possibly reported by XXE when you'll test your configuration.

   On Windows, this means running XXE using java rather than using javaw:

   - If you start XXE using `xxe.exe` (that is, the icon in the "XMLmind XML Editor" start menu), open `xxe.jstart` in notepad, replace "`jre\bin\javaw.exe`" by "`jre\bin\java.exe`", save `xxe.jstart` using the UTF-8 encoding (should have been automatically detected by notepad).

   - If you start XXE using `xxe.bat`, open `xxe.bat` in notepad, replace all occurrences of "`javaw`" by "`java`" and save `xxe.bat`.

4. If you are interested in having a functionality in your configuration which is present in any of the stock XHTML, DocBook or DITA configuration, do not hesitate to take a look at the `.xxe`, `.incl`, `.css`, etc, files found in:

   - ``XXE_install_dir`/addon/config/xhtml/`,

   - ``XXE_install_dir`/addon/config/docbook/`,

   - ``XXE_install_dir`/addon/config/docbook5/`,

   - ``XXE_install_dir`/addon/config/dita/`,

   - ``XXE_install_dir`/addon/config/common/css/`.

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