(mred:put-file name directory replace? prompt filter filter-msg) -> string
name = "Untitled" : string
directory = null : null or a string
replace? = #f : boolean
prompt = "Select File" : string
filter = #f : #f or a regular expression
filter-msg = "That filename does not have the right form." : string
This procedure queries the user for a filename and saves over it.
By default this is bound to mred:std-put-file%.
See section 
.
