2.2. A Few Rules about XML

There are a few basic rules you need to be aware of to write files in any XML language. This includes the NeoPhoto template language.

1. Every open tag must have a corresponding close tag at the same level. For instance, <a><b></b></a> would be correct but <a><b></b> and <a><b></a></b> would not.

2. an open tag with a trailing “/” is a shorthand for both the open tag and the close tag. For instance <sometag/> is the same as <sometag></sometag>.

3. All attribute values must be enclosed in double quotes. For instance, <sometag name=”somevalue”>.

4. The text data between open and close tags must not contain the special characters “<”, “>”, “&”, etc.

5. Depending on the particular language, tags may only be used in a certain order. For instance, in the NeoPhoto Template language the <ImageRow> tag may only be a child of IndexPage and not of any other tag.