Parameter

file-name
   Specifies the file to be created or edited using the TECO editor.
   If the file does not exist, it is created by TECO, unless you
   specify the /NOCREATE qualifier. No wildcard characters are
   allowed in the file specification.

   If you specify the /MEMORY qualifier (default) without a file
   specification, TECO edits the file identified by the logical name
   TEC$MEMORY. If TEC$MEMORY has no equivalence string, or if the
   /NOMEMORY qualifier is specified, TECO starts in command mode and
   does not edit an existing file.

   If you specify the /MEMORY qualifier and a file specification, the
   file specification is equated to the logical name TEC$MEMORY.