HFS
Set HFS ON | OFF
(Initially: OFF)
For all file operations on MPE, Qedit assumes the files are in the MPE namespace. This implies certain things such as file names are always uppercase. If the file you want to work on is in the POSIX namespace, you have to remember to prefix its name with a dot (.) or a slash (/). If the file also contains $include statements, the names on these statements should also have POSIX prefix characters.
If you do not work with many POSIX files, having to include the prefix is probably not bothersome. However, if you spend most of your time in the POSIX namespace, entering the prefix may eventually become annoying. You can enable the Set HFS option and request that all file names be interpreted as POSIX names. If the name does not already start with a dot, a slash or a dollar sign ($), Qedit automatically prepends a dot-slash (./). Qedit does not upshift the file name. This logic also applies to names coded on $include statements.
If Qedit cannot find a file in the POSIX namespace, it automatically looks for it in the MPE namespace. In the MPE namespace, Qedit uses the file name exactly as it was entered, without inserting a prefix. Basically, it searches the MPE namespace in case the file is there. This adds a lot of flexibility for people working in both environments.