Under the General tab of Vertex you can enable items like js and css compression, add tracking codes, adjust image sizes, hide the main component area on specific pages, change the login and register text, and much more.
Below is a list of all the options found on the General tab:
JS Compression - Enabling this feature will compress all template specific js files into two cached php files, one at the top and one at the bottom of the site's source.
Images Percentage Width - This option will set all images in modules and articles only to the set percentage of this field automatically. Enter a number from 1 to 100 to enable it. It should be used as a last resort, but it is offered as an automatic solution.
Image Auto Height - If an image has a max-width on it this will make the height automatically adjust to be proportionate to the image's width. For example if you have an image that's 200px wide, and it's inside a 100px wide div, the max-width:100% call will set the image to 100px. This option will make sure that the image height stays proportionate to the new width. We cannot think of a reason why this wouldn't be used so it's enabled by default.
Image Max Width - This option makes sure that images cannot become larger than their available space. Enabling this feature will set images to a max-width of 100% (meaning 100% of the surrounding element's width). This option is highly recommended to keep enabled.
Hide Component Area - You can choose whether or not show the content/component area on the frontpage. If you choose no you must have a module published in one of the following rows: middle_top, above_body, below_body, or middle_bottom, or the layout will not show correctly because no middle column will be present. If you choose no and disable all modules published to the main, middle area of the site, ie: left, right, left_inset, above_body, etc. then entire middle section will collapse.
Additional Scripts - In this area you can append additional scripts to either the top or bottom of the site's body. This would include scripts like Google tracking codes.
Optional Login and Register URLs - By default the login and register links found at the bottom of the General tab are designed to work with the S5 Box module. However, you can override this and simply enter your own custom urls that the website will redirect to onclick.