local-file
.IP \(bu 4
mail-server
+.IP \(bu 4
+url
.PP
For the \*(lqanon-ftp\*(rq and \*(lqftp\*(rq access types,
.B mhstore
.PP
The program should terminate with an exit status of zero if the
retrieval is successful, and a non-zero exit status otherwise.
+.PP
+For the \*(lqurl\*(rq access types,
+.B mhstore
+will look for the \*(lqnmh-access-url\*(rq profile entry, e.g.,
+.PP
+.RS 5
+nmh-access-url: curl -l
+.RE
+.PP
+to determine the program to use to perform the HTTP retrieval. This program
+is invoked with one argument: the URL of the content to retrieve. The program
+should write the content to standard out, and should terminate with a status of zero if the retrieval is successful and a non\-zero exit status otherwise.
+.PP
.SS "The Content Cache"
When
.B mhstore
^Path:~^To determine the user's nmh directory
^Current\-Folder:~^To find the default current folder
^nmh-access-ftp:~^Program to retrieve contents via FTP
+^nmh-access-url:~^Program to retrieve contents via HTTP
^nmh-cache~^Public directory to store cached external contents
^nmh-private-cache~^Personal directory to store cached external contents
^nmh-storage~^Directory to store contents