# OpenLink Virtuoso Universal Server: Documentation - hidden

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Preface
Overview
Installation Guide
Quick Start & Tours
Sample ODBC & JDBC Applications
Conceptual Overview
Server Administration
Data Access Interfaces
SQL Reference
SQL Procedure Language Guide
Database Event Hooks
Data Replication, Synchronization and Transformation Services
Web Application Development
XML Support
RDF Database and SPARQL
Web Services
Runtime Hosting
Internet Services
Free Text Search
TPC C Benchmark Kit
Using Virtuoso with Tuxedo
Appendix
Virtuoso Functions Guide

## hidden

A wrapper that prevents WYSIWYG editors from displaying its content.
< hidden xsd-stub-xhtml (optional) width (optional) height (optional) debug-srcfile (optional) debug-srcline (optional) debug-log (optional) />
Description

This control does not affect the resulting HTML and Virtuoso/PL code. It is used by some WYSIWYG editors in order to temporarily hide details of the page fragment from the editor's drawing area.

Attributes
xsd-stub-xhtml

This attribute is for internal use only. It has no effect if added to the source VSPX file.

width

Visible width of the control when it is displayed in WYSIWYG tools when the source VSPX text is edited. The value of this attribute will not be used when the resulting HTML is rendered.

height

Visible width of the control when it is displayed in WYSIWYG tools when the source VSPX text is edited. The value of this attribute will not be used when the resulting HTML is rendered.

debug-srcfile

URI of the source document where the tag comes from.

debug-srcline

Line number in the source document where the tag comes from.

debug-log

This defines what sort of data are saved to the debugging log.