The file extension ASA is used for settings files of ASP servers or websites operated with them. The file, commonly called Global.Asa, is optional and includes additional event scripts, variables, functions, and object declarations. All ASP pages have access to the Global.Asa and can use the variables and functionalities defined there so that they do not have to be rewritten in every ASP page.
The Global.Asa file is a plain text file and can be viewed and created with any text editor. Various web page editors, such as Visual Web Developer, also generate this file automatically.
When using manually, it must be noted that the Global.Asa must be located in the root directory of the web server or the ASP application.
Most often resolving problems with opening ASA files is very simple. Just install an appropriate program that supports such files. All of the listed programs support ASA files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of ASA files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate ASA files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the TextMate applications is not on the list, select "Browse" option in order to manually locate the directory where TextMate has been installed.
Sometimes problems with opening ASA files may not lie with the application itself, but can arise due to other causes, such as: