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- (C) Copyright 1988-1993 by Alan J. Avery, Springfield, Illinois
- ALL RIGHTS RESERVED
-
- ======================================================================
- This file explains the DOS environment variables that ELFTREE recognizes
- and how to activate them. If you will be using one or more of them each
- time you start up ELFTREE, we strongly suggest you put the commands that
- activate them in your AUTOEXEC.BAT file.
- Note: In the examples that follow, we assume that ELFTREE was installed
- in the directory C:\TREE.
- ======================================================================
- If you have DOS 2.X, add this:
-
- SET ELFTREEPATH = C:\TREE
- ======================================================================
- Add C:\TREE to the end of your PATH variable, like this:
-
- PATH C:\DOS;C:\TREE;
-
- ======================================================================
- To tell ELFTREE which drives to include when using the Find or Space
- commands, use the ETDRIVES variable (shown for drives [C] through [G]):
-
- SET ETDRIVES=CDEFG
- ======================================================================
- If you have Validate Tree (Customize/Switches menu) set to Yes, you may
- want the tree for selected disks to not be validated. For example, if
- your machine has drives A, B, C, D and F, and drive D: is a remote drive
- on another computer (which takes a long time to grow a tree), here's how
- to limit validation to just the other drives:
-
- SET ETVALTREE=ABCF
- ======================================================================
- REMOVABLE MEDIA or RAM DISKS
- ======================================================================
- If your computer has removable disk drives (such as cartridges, optical
- media or floppy diskettes) or a RAM disk, you may want ELFTREE to store
- the tree maps for one or more of them in the root directory of those
- drives. The advantage is faster access to the disks once the tree maps
- have been built. Here's how to do this for drives [E] and [F]:
-
- SET ETMAP=ef
-
- If you want the tree maps stored with all of the other tree maps, use
- UPPER CASE letters instead of lower case. For example:
-
- SET ETMAP=EF
-
- This is recommended only for drives where you seldom change disks.
-
- Upper and lower case can be combined, so you can say:
-
- SET ETMAP=eF
-
- Note: If a drive is removable, tree maps will ONLY be stored if they are
- included in this list. Thus, if A: and B: are floppy drives, tree maps
- will otherwise NOT be stored for them at all. If a non-removable drive
- appears in this list (such as a RAM disk), tree maps are stored where you
- have indicated.
-
- ======================================================================
- CD-ROM DRIVES
- ======================================================================
- CD-ROM drives present a special challenge because you cannot store tree maps
- on them, and growing the tree can take a LONG time. ELFTREE automatically
- recognizes which drives are CDROM (conforming to the MSCDEX standard) and
- will store a tree map for each unique platter where the other tree maps
- are stored.
-
- For all other drives for which you want this service, or to indicate that
- you don't want this service for a CDROM, you must define an environment
- variable called ETMAPCDR. Here's how to do it for drive G:
-
- SET ETMAPCDR=G (Note: Use G to activate it, and g to deactivate it)
-
- For these disks, ELFTREE builds a 'key' for each platter that it scans, and
- uses this key to tell it what file the tree map is stored in. So, when you
- insert a disk for which a tree map has already been built, ELFTREE will
- determine which file has the tree map and load it immediately.
-
- Notes: If a disk letter is used in both the ETMAP and ETMAPCDR environment
- variables, the ETMAP one takes precedence. Up to 1000 tree maps can be
- tracked automatically, and these use names like ETMAPCDR.###, where ###
- is a number from 000 to 999.
-
- ======================================================================
- ADVANCED FEATURES - NETWORKS and RAM DISKS
- ======================================================================
- When using ELFTREE on a network by several people, each one will need a place
- to store menus, tree maps, etc. This is specified with the ETFIND variable.
- Use a unique directory for each person using it, like this:
-
- SET ETFIND=C:\TREE\MARY
-
- To let MARY run ELFTREE from a RAM disk, just copy ET.EXE, ELFTREE.CHL and
- ETT.BAT to her RAM disk, change her PATH to include it and set ETFIND to
- C:\TREE\MARY.
-
- ======================================================================
-