An msp file extension is related to the MaxScript used to store HTML code for server-side processing to be interpreted by the MaxScript interpreter.
MSP file extension - Max Script Page
What is msp file? How to open msp files?
File type specification:
The msp file extension is associated with MaxScript. Plain ASCII file containing HTML code for server-side processing to be interpreted by the MaxScript interpreter.
MaxScript is a web server extension used in products like DBFree and DBMax (by MAXSIS): its purpose is to parse a web page in search of xBase/Clipper commands to be interpreted on server and to send the results to web browser.
MaxScript offers direct access to data sources on server (DBF tables or ODBC connections) to provide live-contents to the web pages and works with Apache, Xitami and IIS6/7.
This msp file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.