Module chrome is a term for PHP functions that provide some optional HTML markup in which the module code is placed. This is often called a wrapper for the module output. Module chrome allows template designers to have a certain amount of control over the way the output from a Module is displayed in their template. Essentially, it consists of a small amount of predefined HTML which is inserted before, after, or around the output from each module, and which can then be styled using CSS. Module chrome is commonly used to provide borders around modules, especially with rounded corners, but it can be used for much more than that. Module chrome is determined by using the 'style' attribute in the statement calling the module. For example, the following statement may be used in the index.php file of a template to insert the Modules in the 'user1' position and apply the 'custom' Module chrome: <jdoc:include type="modules" name="user1" style="custom" /> It can be seen that the same Module chrome is applied to every Module in that position - in other words, if you want to have two Modules in a column, but want them to have different Module chrome, then they would need to be set up as two different 'positions' (e.g. 'user1' and 'user2'). The standard Joomla! 1.5+ package includes six default Module chrome styles. However, the flexibility of the template system means that you are not limited to these styles - it's very easy to create as many new styles as you want! Reference: http://docs.joomla.org/Glossary
The name for a specific piece of language-specific text in a Joomla application. KEY = Value: where “KEY” is a string to be translated and “Value” is the translated string. In a Joomla program, language keys are used instead of literal language strings. The actual text is substituted at runtime based on the currently active language.
Aliases are short pieces of text that represent the title of certain items (Menu items, Articles and Categories) in a machine-friendly format. This format allows only lowercase letters and dashes (-). Aliases are used by Joomla to make Search Engine Friendly URLs. There are technical limitations to the types of characters that can be included in URLs, so Joomla prevents problems with invalid characters by allowing you to specify an alias. You can fill in an alias yourself. If you leave the alias field empty, Joomla will automatically create an alias from the Title field of an item when it is saved. This means that if you edit the title of an item, but you leave the old alias in its field, the alias (and the URL that is created from it) will not change. Empty the alias field if you want generate a new alias. Reference: http://docs.joomla.org/Glossary
