FASL file format description
Many people share .fasl files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .fasl file can be edited, converted or printed with. On this page, we try to provide assistance for handling .fasl files.
1 filename extension(s) found in our database.
.lsp - Lisp Source Code
The LSP development files are related to GNU Common Lisp. LSP file is a Lisp Source Code. Lisp is a family of computer programming languages with a long history and a distinctive, fully parenthesized syntax.
- GNU Common Lisp
- Development files
- - / -
- cl, fasl, lisp
- Lisp Source Code related extensions:
Naturally, other applications may also use the .fasl file extension. Even harmful programs can create .fasl files. Be especially cautious with .fasl files coming from an unknown source!
Can't open a .fasl file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows can't open this file:
To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.
To avoid this error, you need to set the file association correctly.
- Open Control Panel > Control Panel Home > Default Programs > Set Associations.
- Select a file type in the list and click Change Program.
The .fasl file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
asl, fsl, fal, tasl, fas
Is it possible that the filename extension is misspelled?
Similar file extensions in our database:
- Adobe Photoshop Layer Style
- Miranda IM Emotions Definition
- Falcon Script
- Compiled Fast-Load AutoLISP
- Form Z Script
DataTypes.net currently supports the following operating systems:
Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android
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