In the Properties pane, you can specify topic or screenshot properties such as title, Help ID code, filename, etc. This pane is located in the lower left corner of your Dr.Explain project. To change a property, just click at the required field and specify the new value.
Auto numbering
Use this option to enable or disable automatic numeration for the topic. The preview shows you the number to be assigned to the topic in case the option is turned on. You can setup topic numbering style in the Project Settings / Common Settings.
This field allows you to specify the filename of the topic (without extension) for CHM and HTML output formats. If you plan to generate online help, this name will be used as part of the name for online help. E.g. /help/topic_properties.htm.
Use these buttons to include and exclude the topic from certain formats. You can also exclude (hide) a topic from all formats by selecting it in the Topic tree and pressing the Delete key.