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- FEATURES IN RBBS-PC
-
- CONTENTS
- 1. General
- 2. Messaging
- 3. File System Management and Exchange
- 4. The User Interface
- 5. SysOp Protection
- 6. SysOp Functions, Features, and Support
- 7. System Access Management
- 8. Communications
- *9. Multi-User/Network Support
-
- Over the years RBBS-PC has received many accolades. PC World says "For
- electronic mail and bulletin board applications, the RBBS-PC software is
- the best choice." EDP Analyzer says "RBBS-PC is the easiest to use."
- RBBS-PC was the origin of PC Magazine's "Interactive Reader Service." PC
- Magazine writes that RBBS-PC "is one of the most popular BBS programs for
- the IBM PC" and has called RBBS-PC "an industry standard." INFOWORLD, in a
- comparison of the most popular PC-based bulletin board systems rated
- RBBS-PC the highest. Almost as if in confirmation, the U.S. Department of
- Commerce's National Bureau of Standards report on Electronic Bulletin
- Boards (publication NBSIR 86-3356) is devoted entirely to RBBS-PC.
-
- RBBS-PC CPC17-3 is a significant enhancement to RBBS-PC and will be the
- 36th release of RBBS-PC CPCxx since July of 1983. RBBS-PC's policy of
- freely distributing the source code and continually expanding it's range of
- capabilities throughout these last five years represents not only the very
- best that is embodied in the concept of "users helping users" but an
- expectation of excellence that NO product in the PC industry has ever even
- approached. Here is a brief summary of the major features of RBBS-PC.
-
- RBBS-PC is the Remote Bulletin Board System for the IBM (or compatible)
- personal computer. One of it's two primary purposes is to foster the free
- exchange of information by allowing a microcomputer to be turned into a
- "host" computer that people can "dial" into and use. It is a full featured
- Bulletin Board System that supports:
-
- o bulletins
- o electronic mail (public and private)
- o file exchange (uploading and downloading)
- o on-line questionnaires based on "scripts" written by the SysOp
- o access to other applications from RBBS-PC (i.e. "dooring"), and
- o letting authorized callers drop into the operating system to run
- programs remotely from the caller's computer.
-
- RBBS-PC is unique among host communications programs in that it is made
- available under a limited license which requires that no charge for RBBS-PC
- be levied -- only a minimal copying fee is permitted. RBBS-PC is unique
- also in that ALL the source code for each release is also made available.
- Those who wish to make contributions for RBBS-PC are asked to contribute
- enhancements to RBBS-PC itself or make contributions to the Capital PC
- Users Group. The authors and contributors neither ask for, nor accept,
- money for RBBS-PC. Upgrades, which average about three a year, are free.
- There is no extra charge for a multi-user version. In fact, there is only
- one version of RBBS-PC released! It runs either single or multi-user.
-
- The purpose of this section is to provide a check list of RBBS-PC's major
- features. After all, being free and including source code means that
- RBBS-PC is the "industry standard" against which systems with similar
- functions can be judged by end-users.
-
- RBBS-PC has been around since 1983, and many people may not realize just
- how extensively it has evolved and been enhanced over these last six years.
- One advantage of distributing source code is that those who run RBBS-PC
- systems are able to contribute improvements to it. Many people have
- contributed to RBBS-PC over the years -- over 80 are listed in the RBBS-PC
- documentation itself. The check list of major features and enhancements
- that follows are just part of this on-going tradition.
- 1. General
- -----------
- Number of different "conferences" or messages areas -- unlimited
- Number of messages that can be left -- unlimited
- Number of files that can be uploaded or downloaded -- unlimited
- Number of bulletins that can be posted by the SysOp -- unlimited
- Number of different file transfer protocols supported -- unlimited
- Number of external applications that can be "DOORed" to -- unlimited
- Number of on-line questionnaires -- unlimited
- Number of questions in on-line questionnaires -- unlimited
- Number of levels of security -- 66,536
- Number of registered callers -- 32,767
- Maximum number of characters in a single file -- 32,767
- Maximum baud rate supported -- 19,200
- Maximum number of characters in a single message -- 6,128
- Maximum number of lines in a single message -- 99
- Maximum number of simultaneous callers or users -- 36
- Maximum number of communications ports supported on a one PC -- 8
- Donation to CPCUG for a copy of RBBS-PC (4 diskettes) -- $16
- Is the multi-user version included in the price -- yes
- Is technical support included in the price -- yes
- Is ALL source code distributed with each release -- yes
- Are fixes and patches promptly made available -- yes
- Is extensive technical documentation (220+ pages) including
- file descriptions and record layouts distributed
- with each release -- yes
- Is there an OPTIONAL -- but professionally written and
- published (Bantam Books ISBN 0-553-34552-4),
- startup guide (430+ pages) for first time
- bulletin board system operator (SysOp) -- yes
- 2. Messaging
- -------------
- Within a conference or message area:
- The user's last message read is remembered -- yes
- A user's security level can be unique to each conference -- yes
- User's "preferences" (expert/novice) can be unique -- yes
- A user can have privileges different from other areas -- yes
-
- Conferences can be:
- Public (anyone can join) -- yes
- Private (only pre-registered users can join) -- yes
- Semi-private (users with sufficient security can join) -- yes
-
- Each conference or message area can have unique or different
- Bulletins -- yes
- News -- yes
- On-line help files -- yes
- Files available for downloading -- yes
- mixtures of commands -- yes
- menus -- yes
- "Doors" (i.e. external applications that are exited to) -- yes
-
- When callers log on they can (at the SysOp's option) be
- Automatically notified of all mail waiting for them -- yes
- Automatically notified of only NEW mail waiting for them -- yes
- Automatically notified which conference has mail for them -- yes
- ONLY notified of mail in conferences the caller belongs to -- yes
- Automatically notified of the messages that they have left -- yes
- Automatically notified of the files they uploaded -- yes
- Automatically notified of the files that they downloaded -- yes
- Automatically notified of their profile of preferences -- yes
- Automatically notified of any new "bulletins" -- yes
- Automatically notified of any new files -- yes
- Immediately download files -- yes
- Immediately list the new bulletins -- yes
- Immediately go directly to a specific area (turbo logon) -- yes
-
- Specific messages can be:
- Public (readable by all) -- yes
- Private (to a specific individual) -- yes
- To a "group" (readable by a specific collection of users) -- yes
- Password protected (readable by supplying the password) -- yes
- Public but available to others after the SysOp reads it -- yes
- Private but available to addressee after the SysOp reads -- yes
- Read by only those with a high enough security level -- yes
- "Quick" scanned by subject only -- yes
- "Quick" scanned with 69 messages displayed at a time -- yes
- "Scanned" by sender, addressee, date, subject, and date/
- time it was received by the addressee -- yes
- "Scanned" with 23 messages displayed at a time -- yes
- Read while "quick" scanning -- yes
- Killed (i.e. deleted) one at a time -- yes
- Killed in multiples -- yes
- When a message is read the software provides
- Name of caller who entered the message -- yes
- Date and time the message was entered -- yes
- Name of caller to whom the message is addressed -- yes
- Date and time the message was received -- yes
- Subject of the message -- yes
- Minimum security level needed to read the message -- yes
- Conference the message is in -- yes
-
- Messages can be searched via "threads" (for specific strings)
- By message subject only (i.e. "static" threading) -- yes
- By sender, receiver, subject, or (i.e. "dynamic" threading)-- yes
- By text within a messages (i.e. "turbo" threading) -- yes
- And read while threading without disturbing the search -- yes
-
- Messages can be read
- Forwards -- yes
- Backwards -- yes
- Singularly, by specific message number -- yes
- Multiply, by specifying a series of message numbers -- yes
- While "static" threading (i.e. matching on subject) -- yes
- While "dynamic" threading (i.e. match on all header info) -- yes
- Matching on a string in the header or body -- yes
- That are only addressed TO the caller -- yes
- That are only FROM the caller -- yes
- Or re-read immediately after the last screen of a message
- has been read (useful for long messages) -- yes
-
- Messages can be
- Forwarded to others -- yes
- Re-edited after being saved -- yes
-
- When entering or replying to a message
- The message subject can be edited -- yes
- The sender is notified if the addressee has not logged on -- yes
- The caller can see if the mail has been received -- yes
- After replying only the message header is displayed -- yes
- After replying the caller can re-read the message -- yes
- After replying the caller can kill the message replied to -- yes
-
- The built-in message editor has
- Automatic "word-wrap" -- yes
- Allows any character as a separator for replacing strings -- yes
- Text files to be uploaded remotely as a message -- yes
- Text files to be imported by the local SysOp -- yes
- Block deletion of lines -- yes
- Character strings to be searched and replaced -- yes
- Margin widths that can be set by the caller -- yes
-
- Supports downloading from over 10,000 subdirectories -- yes
-
- Sub-second look up whether file exists for up to 32,767 files -- yes
- 3. File System Management and Exchange
- ---------------------------------------
- The software automatically maintains a list of files
- available to callers containing: -- yes
- Name of the file -- yes
- Size of the file -- yes
- Date the file was created -- yes
- One-line description of the file -- yes
- Extended (multi-line) file description -- yes
-
- Unlimited number of categories in which to classify files -- yes
-
- Categories can have multiple line descriptions -- yes
-
- A file can be associated with multiple categories providing
- the capability of having a complex, tree
- classification system for files -- yes
-
- Callers can search the list of files available -- yes
- By category -- yes
- By date (most recent first) -- yes
- By match on a string in one-line description -- yes
- By match on a string in extended description -- yes
- By "wildcards" -- yes
-
- Callers who upload files can be asked to:
- Categorize the uploaded file -- yes
- Provide a one-line description of the file -- yes
- Provide an extended description of the file -- yes
-
- Authorized callers can add file descriptions without uploading-- yes
-
- On an unsuccessful upload, the partial file is deleted -- yes
-
- Files may be made available for "personal downloads" (i.e.
- limited to a specific user or security level) -- yes
-
- Archived files in ZIP, ARC, PAK, LZH format may be viewed by
- the caller before downloading -- yes
-
- Can install support for viewing any library format -- yes
-
- Files may be separated into different DOS subdirectories
- for callers to download from -- yes
-
- The software can search 7,000 file descriptions in 60 seconds -- yes
-
- Files can be downloaded when searching the list of files -- yes
-
- File can be downloaded when listing the file descriptions -- yes
-
- File listings can be resumed after a download -- yes
-
- Multiple file downloads/uploads can be requested -- yes
- The software supports a "LIBRARY" file subsystem in which:
- files of the same name are in different DOS subdirectories -- yes
- files within a single DOS subdirectory can be .ARCed
- together into a single file and downloaded -- yes
- PC-SIG's CD-ROM can be made available for downloading -- yes
-
- The software allows file transfers with both
- "Internal" protocols (handled by RBBS-PC source code):
- ASCII -- yes
- Xmodem (checksum) -- yes
- Xmodem (cyclical redundancy check) -- yes
- Ymodem -- yes
- and "External" protocols (i.e. handled by separate .EXE files):
- Xmodem (checksum) -- yes
- Xmodem (cyclical redundancy check) -- yes
- Ymodem -- yes
- YmodemG (used when MNP exists in the modem) -- yes
- Imodem (used when MNP exists in the modem) -- yes
- Windowed Xmodem -- yes
- Kermit (as defined by Columbia University) -- yes
- Windowed Kermit (as defined by The Source) -- yes
- Zmodem (batch) -- yes
- Sealink (by System Enhancements Associates) -- yes
- Megalink -- yes
-
- Unlimited number of external protocols can be added -- yes
-
- Uploads can be made unavailable to callers for downloading -- yes
-
- The SysOp can specify:
- A caller's minimum security level required to:
- download files -- yes
- upload files -- yes
- overwrite existing files -- yes
- categorize files -- yes
- view uploaded files -- yes
- An upload time credit be applied to a caller's session
- time for time spent uploading -- yes
- To apply the upload time credit to the maximum time per day-- yes
- To automatically track the ratio of uploads/downloads
- for all callers -- yes
- for no callers -- yes
- for each of the 65,000 security levels -- yes
- To base the ratio of uploads to downloads on the
- number of files transferred -- yes
- or characters transferred -- yes
- To allow callers access to file downloading based on the
- caller's ratio of uploads to downloads -- yes
- To allow callers to download files only after they
- have been logged on a certain number of
- minutes in each session -- yes
- 4. The User Interface
- ----------------------
- The interface shown to the caller allows the SysOp to:
- Substitute any letter for any command -- yes
- Disable commands -- yes
- Restrict specific commands to some security levels -- yes
- Only show callers the commands available to them -- yes
- Group commands into any sections -- yes
- Specify how callers can move between sections -- yes
- Group all commands into a single section -- yes
- Create whatever prompt required to request user commands -- yes
- Create any on-line help files -- yes
- Create and design all menus -- yes
- Make commands words (i.e. ENTER to enter a message) -- yes
- Make commands single letters (i.e. "E" to enter a message) -- yes
- Make commands a number (i.e. "1" to enter a message) -- yes
- Make commands "macros" (i.e. a series of valid commands) -- yes
- Make any item on a menu a "sub-menu" (i.e. selecting the
- item displays another menu) -- yes
- Have an unlimited number of submenus -- yes
- Highlight strings found in searches with colors -- yes
- Support colored prompts -- yes
- Allow the prompts to be different colors -- yes
- Allow menus to be ASCII, graphic, or colored/animated -- yes
- Provide personalized text files (help, etc.) -- yes
-
- User "friendly" features are that the software
- Allows callers with unusual names (hyphenated) -- yes
- Allows callers with similar names (J. Joe and J. M. Joe) -- yes
- Allows the SysOp to accept callers with the same names
- (i.e. two John Jones) and still distinguish
- between them by and field in the user record
- (e.g. city/state) -- yes
- Allows the prompt for the caller's first and last name
- to be configurable by the SysOp -- yes
- Addresses the caller by the first name -- yes
- Thanks the caller for uploads -- yes
- Thanks the caller for messages -- yes
- Thanks the caller for calling -- yes
- Shows all defaults with [] (i.e. brackets) -- yes
- Allows callers to "see and do" (i.e. not have to back out
- of current section or command to do something) -- yes
- Allows users to choose "novice" or "expert" modes -- yes
- Provides short reminders of the commands in prompts -- yes
- Provides on-line help for any command -- yes
- Provide different help levels for "novice" and "experts" -- yes
- Allows "command stacking" -- yes
- Accepts unlimited type ahead from remote users -- yes
- Provides a fast logon (directly locates the user's record) -- yes
- Automatically pages the SysOp when a specific user logs on -- yes
- Prevents text from scrolling off the top of a user's screen-- yes
- Wipes off prompt for next screen when caller continues -- yes
- Takes the phone off the hook (so callers get a busy signal)
- when the SysOp is on locally doing maintenance -- yes
- Informs the caller who "pages" the SysOp of the times that
- the SysOp is normally available -- yes
- Automatically logs off a caller who is inactive based on
- a time period set by the SysOp -- yes
- Allows callers to see log of others who called that shows:
- Name, date, and time other callers logged on -- yes
- City and state other callers were from -- yes
-
- The software remembers the "preferences" set by the caller for:
- Preferred file transfer protocol -- yes
- Type of displays to be shown (ASCII, graphic, colors) -- yes
- Lines per page (or screen) at the user's terminal -- yes
- Margin width when entering messages -- yes
- Upper case only or upper & lower case -- yes
- A prompt bell with each command prompt -- yes
- Padding end of lines with nulls (for hardcopy terminals) -- yes
- Sending a line feed after every line -- yes
- End-to-end echoing of characters (normally turned off by
- a caller using networks that have relay delays
- like PC-Pursuit) -- yes
- "TurboKey" - acting on first letter entered at prompt -- yes
- Reviewing files immediately upon logging on -- yes
- 5. SysOp Protection
- --------------------
- Because a SysOp is absolutely and personally responsible for what is
- communicated, the software protects the SysOp by:
- Recording all caller activity by caller, date, and time -- yes
- Recording all communication among callers -- yes
- Allowing the SysOp to preview messages between callers -- yes
- Allowing the SysOp to preview files that are uploaded
- before they are available to other callers -- yes
- Automatically locking out callers who attempt to break
- the system -- yes
- Automatically denying access to callers who use names
- that the SysOp deems unacceptable -- yes
- Allowing the SysOp to "chat" directly on-line with
- a caller -- yes
- Preventing callers from chatting directly on-line
- with each other outside of the SysOp's control -- yes
- Assigning each caller a specific security levels -- yes
- Designating the minimum security level to use each command -- yes
- Allowing the SysOp to assign security levels to commands -- yes
- Allowing the SysOp to assign security levels to callers -- yes
- Allowing the SysOp to change any caller's security level -- yes
- Allowing the SysOp to assign a security levels to files
- or groups of files that a caller must have in
- order to access them -- yes
- Allowing the SysOp to require callers to know specific
- passwords to access files or groups of files -- yes
- Allowing the SysOp to require callers to have BOTH a
- specific security level AND know a specific
- password in order to access a file or a
- group of files -- yes
- Allowing files to be protected (by requiring a password
- and/or a minimum security level to access) based
- on any combination of
- subdirectory, -- yes
- disk drive, -- yes
- fully qualified names, -- yes
- file extensions, -- yes
- "wildcards" -- yes
- Allowing "personal" files (i.e. files that only a specific
- caller can access -- yes
- Allowing each command to have a specific security level
- that designates the minimum security level
- needed to use the command -- yes
- Automatically paging the SysOp when a specific caller
- logs on (without the caller knowing it) -- yes
- Instantaneously allowing the SysOp to lock out and
- immediately disconnect an on-line caller -- yes
- Enabling the SysOp to display the on-line caller's
- profile (i.e. all the information about the
- caller) anytime a caller is on-line without
- the caller being aware of it -- yes
- 6. SysOp Functions, Features, and Support
- ------------------------------------------
- The software can be set to automatically drop to DOS at a
- specific time of day (i.e. to do system maintenance, etc.) -- yes
-
- The software can support and interface with store-and-forward
- electronic mail systems (i.e. FIDO, BINKLEY TERM, SEADOG) -- yes
-
- From the local keyboard's function keys, the software allows
- the SysOp to:
- Exit to DOS -- yes
- Toggle on or off if callers can "page" the SysOp -- yes
- Toggle the local print on and off -- yes
- Log on locally to the system without calling in -- yes
- Cause the system to immediately answer the phone -- yes
- Enter input from the local keyboard on the caller's behalf -- yes
- Grant a caller temporary SysOp privileges -- yes
- Temporarily increase or decrease a caller's security level
- in increments of one or five -- yes
- Permanently change a caller's security level -- yes
- Temporarily change the elapsed time of the current
- caller's session by one or five minutes -- yes
- Display on the local screen what the caller sees -- yes
- Invite the caller to "chat" with the SysOp -- yes
- Immediately lock out and log off the caller -- yes
- Automatically log the SysOp on next after current caller -- yes
-
- The commands a SysOp can execute locally or remotely are:
- Exit to DOS -- yes
- Toggle on or off if callers can "page" the SysOp -- yes
- List the comments that have been left to the SysOp -- yes
- List the log of the caller's activities that shows
- Name, date, and time a caller logged on -- yes
- City and state the caller was from -- yes
- Date and time a caller logged off -- yes
- If the caller was logged off due to inactivity -- yes
- If the caller was logged off due to carrier lost -- yes
- Baud rate and communications parity caller used -- yes
- Files downloaded and uploaded -- yes
- Success or failure of file transfers -- yes
- Protocol used for file transfers -- yes
- Number of characters transferred -- yes
- Which bulletins a caller read -- yes
- Which conferences a caller entered -- yes
- Which messages a caller read -- yes
- Which messages a caller left -- yes
- Which messages a caller killed (i.e. deleted) -- yes
- If the caller left a comment -- yes
- If the phone was answered but nobody logged on -- yes
- Caller was a newuser -- yes
- A newuser changed their name/address -- yes
- If caller changed password (and to what) -- yes
- Questionnaire answered by the caller -- yes
-
- Restore a message that was killed (i.e. deleted) -- yes
- Erase the comments file -- yes
- Maintain the file of users by:
- Adding a user -- yes
- Listing the file of users -- yes
- Printing the file of users on a local printer -- yes
- Deleting a specific user's record -- yes
- Scanning every user record for a specific string -- yes
- Scanning every user record for a specific user -- yes
- Modifying a specific user's password -- yes
- Modifying a specific user's graphics preference -- yes
- Setting a specific user's security level -- yes
- Changing the beginning of a user's subscription -- yes
-
- A SysOp can identify callers by:
- Any field in the user's record (i.e. account code) -- yes
- Supplying a configurable prompt for the field used to
- uniquely identify callers (i.e. employee number) -- yes
- Allow interior blanks in caller's names -- yes
-
- A SysOp can have on-line questionnaires that
- All users are required to answer -- yes
- Only new users are required to answer -- yes
- Are unlimited in number -- yes
- Contain an unlimited number of questions within each -- yes
- Record all answers to a different file -- yes
- Automatically raise or lower a caller's security level
- based on the caller's answers -- yes
- 7. System Access Management
- ----------------------------
- The SysOp can specify:
- A maximum time per session for callers -- yes
- A maximum time per day for callers -- yes
- A different session time be allowed for each of the
- 65,000 different security levels -- yes
- A different maximum time allowed callers on the system
- each day based on the caller's security level -- yes
- A minimum baud rate for new callers to logon with -- yes
- A different minimum baud rate for existing callers to logon-- yes
- A different maximum time per session based on time of day
- (hour and minute) the user logged -- yes
- A maximum time per day that is different from the maximum
- time per session -- yes
- To allow callers access to other applications (i.e.
- doors) only after they have been logged on a
- certain number of minutes in each session -- yes
- To allow all callers access to the entire system (open) -- yes
- To allow only pre-registered calls access to the entire
- system (closed) -- yes
- To allow automatic and instant access to the system for
- for new users without pre-registering them
- based on information pre-loaded into the system
- (i.e. account codes, employee numbers, etc.) and
- issued to callers before they access the system -- yes
-
- The software provides an optional subscription management system that:
- Is built-in -- yes
- Is automatic (i.e. requires minimum SysOp effort) -- yes
- Is optional -- yes
- Bases the subscriptions on the date of the caller's
- first access to the system -- yes
- Subscribers are given temporary, date-limited, "trial
- periods" that allow them to access more features -- yes
- The number of days prior to a caller being warned that the
- subscription expires can be SysOp-specified by -- yes
- Automatically warns subscribers before their sub-
- scriptions expire -- yes
- Automatically reduces the subscribers system security
- level upon subscription expiration -- yes
- 8. Communications
- ------------------
- The software will automatically
- answer the phone and adjust to a caller's
- communications settings -- yes
- allow the modem to adjust to the caller's communications
- settings while maintaining a higher data
- transfer rate (19200 baud) between itself and
- the modem to which it is attached -- yes
- recognize a caller who calls at:
- 300 baud -- yes
- 1200 baud -- yes
- 2400 baud -- yes
- 4800 baud -- yes
- 9600 baud -- yes
- 19200 baud -- yes
- recognize the MNP (automatic error correction) protocols
- built into the modem it is attached to -- yes
- recognize Hayes' pseudo LAP-B (automatic error correction)
- protocol if the modem it is attached Hayes is a
- Hayes modem with such protocol -- yes
- recycle if no calls are received in a specified period -- yes
- switch to N/8/1 for binary file transfers without
- disconnecting the user -- yes
-
- The software will allow a 300 baud caller to shift to
- 450 baud while on-line without disconnecting -- yes
-
- The software supports modems that do not handle modem
- commands but which can automatically answer the phone -- yes
-
- The software handles "flow control" via:
- Clear-to-send (CTS) -- yes
- XON/XOFF -- yes
-
- The software supports attachment directly to
- a private branch exchange (PBX) -- yes
- a public data network via an X.25 PAD -- yes
-
- The software has optional, configurable modem commands to:
- initialize the modem's firmware -- yes
- initialize the modem each time the software recycles -- yes
- set up the modem to answer the phone on each recycle -- yes
- set the number of rings to answer the phone -- yes
- answer the phone -- yes
- take the phone off the hook -- yes
-
- The software can be configured to wait a specified number of
- seconds:
- after initializing the modem on recycling -- yes
- wait after issuing a modem command -- yes
- before logging off an idle caller -- yes
- after answering the phone for a carrier -- yes
-
- The SysOp can set the number of rings the software answers on -- yes
-
- The software can be set to wait to issue modem commands
- when the phone is not ringing -- yes
- The software can utilize external communications drivers
- (for communications ports not supported by BASIC) -- yes
-
- 9. Multi-User/Network Support
- ------------------------------
- Supports multi-tasking under
- MultiLink (Version 4.0 and earlier) -- yes
- DESQView -- yes
- Windows -- yes
- DoubleDos -- yes
-
- Under multi-tasking, minimizes its resource demand by
- freeing resources when waiting under
- DESQView -- yes
- DoubleDos -- yes
-
- Supports file and record locking in
- MultiLink (Version 4.0 and earlier) -- yes
- OMNINET from Corvus -- yes
- PC-NET from Orchid -- yes
- DESQview from Quarterdeck -- yes
- 10NET from Fox Research -- yes
- any environment compatible with NETBIOS -- yes