Message Variables (@-codes)

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====== Message Variables (@-codes) ======

Synchronet sysop-posted messages, text and menu files, and some lines in the ''[[dir:ctrl]]/[[text.dat]]'' file may contain special //Message Variables//, also called //@-codes// ("at codes", some BBS authors and sysops refer to these types of codes as "@ Macros" or "@ Variables" or "MCI codes"((and not because of the defunct phone company))). @-codes may also be displayed using the ''bbs.atcode()'' [[JavaScript]] method.

@-codes are called such because they begin and end with the ''@'' (ASCII 64) ("at") character. The code names themselves (sandwiched between the @'s) must be entered using only ''UPPERCASE'' letters. Some additional symbols and numbers may also be included in the @-code, but never a space.

Some of the @-codes supported in Synchronet have unusual names or aliases specifically for //PCBoard// and/or //Wildcat!// BBS Software compatibility. Although this compatibility with these other BBS packages is less of a concern these days, the unusual code names remain.

Synchronet also, optionally, supports some [[custom:colors|Color Codes]] which begin and/or end with the ''@'' character (again, specifically for //PCBoard// and/or //Wildcat!// BBS Software compatibility). These //PCBoard// and //Wildcat!// color codes are not usually referred to as @-codes and **do not** fall under the usage/formatting guidelines given on this page.

===== Messages =====
@-codes contained in the text of messages sent as email or posted on sub-boards will **not** be expanded to the equivalent text unless the message was sent or posted locally by user #1 (the sysop). 

If using [[util:smbutil]] to import a message with embedded @-codes, use the ''-e1'' option to specify that the message is being sent from the local sysop (user #1) to enable expansion of the @-codes when the message is viewed by users.

===== Formatting =====

By default, @-codes are expanded to just the number of characters necessary to display the dynamic text with no padding, shortened (truncated) if necessary to fit the available terminal line. This default formatting can be modified by adding a //format modifier//. 

==== Format Modifiers ====

Most @-codes support an optional format modifier. Modifiers are appended to the end of the @-code variable name and before the terminating ''@'' character, separated from the code itself with either a hyphen (''-'') or a pipe (''|'') character.

When using the hyphen (''-'') modifier separator, only one format modifier may be used per @-code instance (you cannot combine format modifiers) and @-code arguments (separated from the code with a colon) are **not** supported.

When using the pipe (''|'') modifier separator, some modifiers may be combined with others (e.g. ''|TR'') and @-code arguments (separated from the code with a colon) **are** supported.

^ Modifier ^ Purpose ^
| ''L''   | Pad and left-justify an expanded @-code |
| ''R''   | Pad and right-justify an expanded @-code |
| ''C''   | Pad and center an expanded @-code (added in v3.17b) |
| ''W''   | Displays double-wide using "fullwidth" Unicode code points if possible, spaces between the characters otherwise |
| ''Z''   | Zero-pad and right-justify an expanded @-code (added in v3.17b) |
| ''T''   | Thousands-separated (e.g. with a comma) numeric values, may be combined with other modifiers (added in v3.17c) |
| ''U''   | Convert all alphabetic characters in string to uppercase (added in v3.18a) |
| ''>''   | Allow the terminal to wrap (don't truncate) overly-long expanded @-codes (added in v3.17c) |

=== Width Specificity ===

A string //width//, specified as a positive decimal number, may immediately follow a format modifier.

Example: ''@NODE|L2@'' for a left-justified 2 character (space padded) node number or ''@NODE|Z2@'' for a right-justified 2 digit (zero-padded) node number.

Another method of specifying the width of an expanded @-code is to include non-numeric non-space characters between the modifier and the trailing ''@'' character. 

Example: ''@ALIAS|R###########@'' for a right-justified 20 character user alias (any non-numeric non-space characters could have been used in place of the ''#'' characters).

=== Truncation ===

When a //width// is specified, expanded @-code strings which are **longer** than the specified width will be truncated (shortened) to adhere to the requested width. The left-most characters are preserved/displayed while the right-most characters are truncated (lost).

By default, //most// expanded @-codes that would reach the last column of the terminal screen are truncated (shortened) so as to not cause an automatic line-wrap of the user's terminal. If you wish for an expanded @-code to be displayed in the last terminal column, or beyond (possibly causing an automatic line-wrap of the terminal) use the ''>'' format modifier.

=== Exceptions ===
@-codes that take an argument value, preceded by a colon ('':'') character, cannot be used with format modifiers when using the hyphen (-) modifier separator; use the pipe (|) modifier separator instead.
===== System Information =====

The currently supported //System Information// @-codes are:

^Code           ^Aliases         ^Description ^
|ANODES         |AN, ANODE       |Number of active nodes (including current node) |
|AUTODEL        |                |Maximum days of user inactivity before auto-deletion or "unlimited" |
|BBS            |BOARDNAME       |Name of BBS |				
|BUILD_DATE     |                |Date of Synchronet build |
|BUILD_TIME     |                |Time of Synchronet build |
|COMPILER       |                |Compiler used to build Synchronet|
|CONF           |                |Name of current Group and Sub-board|
|CONFNUM        |                |Number of current Group and Sub-board (separated by a space)|
|CONN           |                |Connection description (modem type, "Telnet", "RLogin", etc.)|
|COPYRIGHT      |                |Synchronet copyright details|
|DATE           |SYSDATE         |Current system date (in "DD/MM/YY" or "MM/DD/YY" format)|
|DATE://fmt//   |TIME://fmt//    |Current system date in specified [[strftime]] format |
|DATEFMT        |                |Date display/input format: "DD/MM/YY" or "MM/DD/YY" |
|DATETIME       |                |Current system date and time (in 24-char long format)|
|DATETIMEZONE   |                |Current system date and time and time-zone |
|DIR            |                |Current file directory short description |
|DIRL           |                |Current file directory long description  |	
|DN             |                |Number of current file directory	   |
|DL             |DN-L            | " " padded and left justified (4 chars wide)  |
|DR             |DN-R            | " " padded and right justified (4 chars wide) |  
|EVENT          |                |Date and time of next scheduled timed event |
|FIDOADDR       |                |System's primary FidoNet address               |
|FILES          |                |Number of files in the user's currently selected file transfer directory |
|FILES://code// |               |Number of files in the file transfer directory specified by internal-//code// |
|FILES://path// |               |Number of files in the directory specified by //path// |
|FILESIZE       |                |Total size of all files in the user's currently selected file transfer directory |
|FILESIZE://code//|              |Total size of all files in the file transfer directory specified by internal-//code//|
|FILESIZE://path//|              |Total size of all files matching the path/filespec specified in //path//|
|FILEKB         |                |Total size (in kibibytes) of all files in the user's currently selected file transfer directory |
|FILEKB://code// |               |Total size (in kibibytes) of all files in the file transfer directory specified by internal-//code//|
|FILEKB://path// |               |Total size (in kibibytes) of all files matching the path/filespec specified in //path//|
|FILEMB         |                |Total size (in mebibytes) of all files in the user's currently selected file transfer directory |
|FILEMB://code// |               |Total size (in mebibytes) of all files in the file transfer directory specified by internal-//code//|
|FILEMB://path// |               |Total size (in mebibytes) of all files matching the path/filespec specified in //path//|
|FILEGB         |                |Total size (in gibibytes) of all files in the user's currently selected file transfer directory |
|FILEGB://code//|                |Total size (in gibibytes) of all files in the file transfer directory specified by internal-//code//|
|FILEGB://path//|                |Total size (in gibibytes) of all files matching the path/filespec specified in //path//|
|FREESPACE      |                |Free disk space available for uploads (in bytes) |
|FREESPACEK     |                |Free disk space available for uploads (in kibibytes) |
|FULL_VER       |                |Synchronet full version number (e.g. "3.15a")|
|GIT_BRANCH     |                |Synchronet Git repository branch name (e.g. "master")|
|GIT_HASH       |                |Synchronet Git repository commit hash (most significant Git-SHA hex-digits)|
|GRP            |                |Current message group short description |
|GRPL           |                |Current message group long description |
|GN             |                |Number of current message group |
|GL             |GN-L            | " " padded and left justified (4 chars wide)   |
|GR             |GN-R            | " " padded and right justified (4 chars wide)   |
|HOSTNAME       |                |Server's hostname |
|INETADDR       |                |System's Internet Address (as configured in SCFG)|
|JS_VER         |                |JavaScript Library Version |
|LASTCALLERNODE |PREVON, LASTCALLERSYSTEM |Name of user last user to use the terminal server |
|LIB            |                |Current file library short description |
|LIBL           |                |Current file library long description |
|LN             |                |Number of current file library |
|LL             |LN-L            | " " padded and left justified (4 chars wide) |
|LR             |LN-R            | " " padded and right justified (4 chars wide) |
|LOCAL-IP       |                |System's IP address |
|LOCATION       |                |System location (e.g. "city, state") |
|MSGREPLY       |                |Command key to reply to last message ('A' or 'R') |               
|MSGREREAD      |                |Command key used to re-read last message ('R' or 'A') |
|MSG_LIB        |                |Synchronet Message Base Library version information |
|NOACCESS       |                |Why user was denied access (last failed ARS check) |
|NODE           |NN              |Number of current node |
|NODE//n//      |                |Status of node number //n// |
|NUMDIR         |                |Number of current library and directory |
|ONODES         |ONODE, ON       |Number of other active nodes (not counting current node) |
|OS_VER         |                |Operating system type and version information|
|PLATFORM       |                |Platform or operating system name (e.g. "win32", "linux")|
|PWDAYS         |                |Maximum age (in days) of user's password before forced-change or "unlimited" |
|QUESTION       |                |Current Yes/No question being asked of the user |
|QWKID          |                |System's QWK BBS-ID |
|REV            |                |Synchronet revision (single letter)|
|SERVED         |                |Total clients served by the [[:server:Terminal]] Server during this uptime |
|SOCKET_LIB     |                |Socket Library type and version information |
|SMB_AREA       |                |Current message group and sub-board (short names) or ''Email'' for mail base |
|SMB_AREA_DESC  |                |Current message group and sub-board (long names) or ''Personal Email'' for mail base |
|SMB_GROUP      |                |Current message group name          |
|SMB_GROUP_DESC |                |Current message group description (long name)|
|SMB_GROUP_NUM  |                |Current message group number|
|SMB_SUB        |                |Current message sub-board name (or ''Mail'' for the mail base) |
|SMB_SUB_DESC   |                |Current message sub-board description (or ''Mail'' for the mail base)|
|SMB_SUB_CODE   |                |Current message sub-board internal code (or ''MAIL'' for the mail base)|
|SMB_SUB_NUM    |                |Current message sub-board number|
|SMB_MSGS       |                |Total number of messages visible to current user in the current message sub-board|
|SMB_CURMSG      |                |Currently viewed message (index) into current message sub-board|
|SMB_LAST_MSG     |                |Number of last message stored in current message sub-board|
|SMB_MAX_MSGS     |                |Maximum number of messages to store in current message sub-board|
|SMB_MAX_CRCS     |                |Number of history message body hashes to store for current message sub-board|
|SMB_MAX_AGE     |                |Maximum age (in days) of messages stored in current message sub-board|
|SMB_TOTAL_MSGS     |                |Total number of message stored in the current message sub-board|
|MSG_NUM     |                |Current message number|
|MSG_ID     |                |Current message ID|
|MSG_REPLY_ID     |                |Current Message Reply-ID|
|MSG_TO         |                |Current message to-user name/number/address|
|MSG_TO_NAME    |                |Current message to-user name|
|MSG_TO_EXT     |                |Current message to-user extension (number)|
|MSG_TO_NET     |                |Current message to-user network address|
|MSG_TO_NETTYPE |                |Current message to-user network address type (e.g. "QWKnet", "FidoNet", or "Internet") |
|MSG_CC         |                |Current message carbon-copy list (usually blank)|
|MSG_FROM       |                |Current message from-user name/number/address|
|MSG_FROM_NAME  |                |Current message from-user name|
|MSG_FROM_EXT   |                |Current message from-user extension (number)|
|MSG_FROM_NET   |                |Current message from-user network address|
|MSG_FROM_NETTYPE |              |Current message from-user network address type (e.g. "QWKnet", "FidoNet", or "Internet") |
|MSG_SUBJECT    |                |Current message subject|
|MSG_SUMMARY    |                |Current message summary (usually blank)|
|MSG_TAGS       |                |Current message tags (space-separated, optional)|
|MSG_DATE       |                |Current message date/time written |
|MSG_IMP_DATE   |                |Current message date/time imported |
|MSG_AGE        |                |Current message age (e.g. in seconds, minutes, hours, etc.) |
|MSG_TIMEZONE   |                |Current message timezone written |
|MSG_IMP_TIMEZONE  |             |Current message timezone imported |
|MSG_ATTR       |                |Current message attributes|
|MSG_AUXATTR    |                |Current message auxiliary attributes|
|MSG_NETATTR    |                |Current message network attributes|
|MSG_UPVOTES    |                |Current message total number of 'up-votes' (new v3.17)|
|MSG_DOWNVOTES  |                |Current message total number of 'down-votes' (new in v3.17)|
|MSG_SCORE      |                |Current message vote score (down-votes subtracted from up-votes)|
|MSG_VOTED      |                |Current user voted status for current message (checkmark) |
|MSG_UPVOTED    |                |Current user up-voted status for current message (checkmark) |
|MSG_DOWNVOTED  |                |Current user down-voted status for current message (checkmark) |
|MSG_THREAD_ID  |                |Current message thread's thread-id (message number) |
|MSG_THREAD_NEXT|                |Current message thread's next message number |
|MSG_THREAD_BACK|                |Current message thread's previous message number |
|MSG_THREAD_FIRST|               |Current message's first reply message number |
|FILE_AREA      |                |Current file area (lib and directory) names |
|FILE_AREA_DESC |                |Current file area (lib and directory) descriptions |
|FILE_LIB       |                |Current file library name |
|FILE_LIB_DESC  |                |Current file library description |
|FILE_LIB_NUM   |                |Current file library name |
|FILE_DIR       |                |Current file directory name |
|FILE_DIR_DESC  |                |Current file directory description |
|FILE_DIR_CODE  |                |Current file directory internal code |
|FILE_DIR_NUM   |                |Current file directory number |
|FILE_NAME      |                |Current file name |
|FILE_DESC      |                |Current file description |
|FILE_UPLOADER  |                |Current file uploader (e.g. user name) |
|FILE_SIZE      |                |Current file size (in bytes) |
|FILE_CREDITS   |                |Current file credit value |
|FILE_TIME      |                |Current file modification time and date |
|FILE_TIME_ULED |                |Current file upload time and date |
|FILE_TIME_DLED |                |Current file last download time and date |
|FILE_DATE      |                |Current file modification date |
|FILE_DATE_ULED |                |Current file upload date |
|FILE_DAT_DLED  |                |Current file last download date |
|FILE_TIMES_DLED |               |Current file download count |
|STATS.LOGONS   |NUMCALLS, TCALLS|Total logons during history of system |
|STATS.LTODAY   |                |Total logons today                                      |
|STATS.TIMEON   |                |Total time used during history of system (in minutes)   |
|STATS.TTODAY   |                |Total time used today (in minutes)                      |
|STATS.ULS      |                |Total uploads today                                     |
|STATS.ULB      |                |Total bytes uploaded today                              |
|STATS.DLS      |                |Total download today                                    |
|STATS.DLB      |                |Total bytes downloaded today                            |
|STATS.PTODAY   |                |Total posts today                                       |
|STATS.ETODAY   |                |Total e-mails sent today                                |
|STATS.FTODAY   |                |Total feedbacks sent today                              |
|STATS.NUSERS   |                |Total number of new users today                         |
|SUB            |                |Current message sub-board short description	|
|SUBL           |                |Current message sub-board long description	|
|SN             |                |Number of current message sub-board		|
|SL             |SN-L            | " " padded and left justified (4 chars wide) |   
|SR             |SN-R            | " " padded and right justified (4 chars wide) |  
|SYSOP          |                |Name of System Operator 			|
|SYSAVAIL       |                |Sysop availability for chat (e.g. "Available" or "Not Available")|
|SYSAVAILYN     |                |Sysop availability for chat (e.g. "Yes" or "No")|
|TFILE          |                |Total number of files on system |
|TIME           |SYSTIME         |Current system time |
|TIMEZONE       |                |Current system time zone abbreviation or UTC offset|
|TMSG           |                |Total number of messages on system|
|TNODES         |TNODE,TN        |Total number of Terminal Server nodes |
|TUSER          |                |Total number of currently active registered users |
|UPTIME         |                |Synchronet uptime details|
|VER            |                |BBS version number (e.g. "3.15") |
|VER_NOTICE     |                |BBS version information (e.g. "Synchronet BBS for Win32  Version 3.15")|
|WHO            |                |Display status of all active nodes|
===== User Information =====

The currently supported //User Information// @-codes are:

^Code         ^Aliases         ^Description ^
|ADDR1        |                |User's street address |
|AGE          |                |User's age (in years since birth date) |
|ALERTS       |                |Node activity alerts enabled status (e.g. "On" or "Off") |
|ALIAS        |NAME, USER      |User's alias |
|BDATE        |                |User's birth date (in "MM/DD/YY" or "DD/MM/YY" format) |
|BDATE://fmt//|BIRTH://fmt//   |User's birth date in the specified [[strftime]] format |
|BDATEFMT     |BIRTHFMT        |User birthdate input format (i.e. either "MM/DD/YYYY" or "DD/MM/YYYY") |
|BIRTH        |                |User's birth date (in "MM/DD/YYYY" or "DD/MM/YYYY" format) |
|BYTELIMIT    |                |User's free credits per day                     |
|BYTESLEFT    |                |User's total credits                            |
|CALLS        |NUMTIMESON      |Total number of logons for user 		|
|CITY         |                |User's city |                                     
|CREDITS      |                |Total unspent credits the user has earned |
|DAYBYTES     |                |Number of free credits used today by user |
|DLBYTES      |                |Total bytes downloaded by user |
|DLFILES      |DOWNS           |Total files downloaded by user |
|DLKLIMIT     |                |User's total credits (in kibibytes) |
|DOWNK        |                |Total kibibytes downloaded by user |
|EMAILADDR    |                |User's Internet e-mail address on your system |
|EMAILS       |                |Total number of emails sent by user |
|ETODAY       |                |Number of emails sent today by user |
|EXPDATE      |EXDATE          |User's expiration date (in "MM/DD/YY" or "DD/MM/YY" format) |
|EXPDATE://fmt// |             |User's expiration date in specified [[strftime]] format |
|EXPDAYS      |                |Days left before user expires |
|FBACKS       |                |Number of feedback messages sent by user |
|FIRST        |                |First word of user's alias                     |
|FIRSTON      |                |Date and time of user's first logon              |
|FIRSTON://fmt//|              |Date and time of user's first logon in specified [[strftime]] format |
|FIRSTDATEON  |SINCE           |Date of user's first logon (in "MM/DD/YY" or "DD/MM/YY" format) |
|FIRSTTIMEON  |                |Time of user's first logon (in "HH:MM am" or "HH:MM:SS" format) |
|FIRSTREAL    |REAL            |First word of user's real name                 |
|FROM         |                |User's location (e.g. "City, State")                 |
|FREECDT        |                |User's remaining freely-awarded (unearned) credits for today         |
|FWD            |                |User's netmail forward status (e.g. "On" or "Off") (new in v3.18c)|
|HANDLE         |                |User's chat handle                              |
|HOST           |CPU             |Client's hostname |
|IP             |CID             |Client's IP address or Caller-ID information     |
|LAST           |                |Last word of user's alias |                        
|LASTDATEON     |                |Date of user's last logon (in "MM/DD/YY" or "DD/MM/YY" format) |
|LASTIP         |                |IP address of user's last logoff (new in v3.18c) |
|LASTNEW        |                |Date of user's last new file scan (in "MM/DD/YY" or "DD/MM/YY" format)   | 
|LASTNEW://fmt//|                |Date and time of user's last new file scan in specified [[strftime]] format |
|LASTON         |                |Date and time of user's last logon              |
|LASTON://fmt// |                |Date and time of user's last logon in specified [[strftime]] format |
|LASTTIMEON     |                |Time of user's last logon (in "HH:MM am" or "HH:MM:SS" format) |
|LASTREAL       |                |Last word of user's real name                   |
|LTODAY         |                |Number of times user has logged on today |
|KBLEFT         |                |User's total credits (in kibibytes)             |
|KBLIMIT        |DLKLIMIT, MAXDK |User's free credits per day (in kibibytes)      |
|MAILR        |                  |Number of read mail messages waiting for current user|
|MAILR://x//  |MAILR#//x//       |Number of read mail messages waiting for user number //x// (x=0 for all users)|
|MAILU        |                  |Number of unread mail messages waiting for current user|
|MAILU://x//  |MAILU#//x//       |Number of unread mail messages waiting for user number //x// (x=0 for all users)|
|MAILW        |                  |Total number of mail messages waiting for current user (includes SPAM)|
|MAILW://x//  |MAILW#//x//       |Total number of mail messages waiting for user number //x// (x=0 for all users)|
|MAILP        |                  |Number of pending mail messages sent by current user|
|MAILP://x//  |MAILP#//x//       |Number of pending mail messages sent by user number //x// |
|MAXCALLS     |                |Maximum number of calls/logons per day allowed per user's security level |
|MAXLINES     |                |Maximum number of lines per message allowed per user's security level |
|MAXMAILS     |                |Maximum number of sent emails per day allowed per user's security level |
|MAXPOSTS     |                |Maximum number of posted messages per day allowed per user's security level |
|MBANKED      |                |Minutes banked by user |
|MEXTRA       |                |Extra time earned today, in minutes |
|MPERC        |TIMELIMIT       |Minutes allowed per call/logon |
|MPERD        |                |Minutes allowed per day |
|MSGLEFT      |MSGSLEFT        |Total number of messages posted by user 	|
|MSGREAD      |                |Number of messages read by user this call	|
|MTODAY       |                |Total minutes used during previous logons today |
|MTOTAL       |                |Total minutes used during all previous logons |
|NEWFILETIME  |                |Date and time of user's last new file scan (see LASTNEW) |
|NETMAIL      |                |User's personal email or netmail address (new in v3.18c) |
|NOTE         |MEMO1           |User's note (new in v3.18c) |
|PAGER        |                |Chat pager enabled status (e.g. "On" or "Off")|
|PCR          |                |User's post/call ratio, as a percentage (not capped at 100) |
|PHONE        |HOMEPHONE, DATA, DATAPHONE |User's phone number |
|PTODAY       |                |Number of messages posted by user today |
|PWAGE        |                |Age (in days) of the current user's password |
|PWDATE       |MEMO            |Date of user's last password modification (in "MM/DD/YY" or "DD/MM/YY" format) |
|PWDATE://fmt//|               |Date/time of user's last password modified in specified [[strftime]] format |
|REALNAME     |COMPANY, MEMO2  |User's real name |
|SEC          |SECURITY        |User's security level (0-99) |                          
|SPAMW        |         |Number of SPAM messages waiting |
|SPAMW://x//  |SPAMW#//x//  |Number of SPAM messages waiting for user number //x// |
|SPLITP       |         |Split-screen private chat enabled status (e.g. "On" or "Off")|
|STATE        |         |User's state (from location)|
|TBANKED      |         |Banked time in HH:MM format |
|TEXTRA       |         |Extra time earned by user, in H:MM format |
|TLAST        |         |Time used by user during last logon |
|TIMELEFT     |MINLEFT  |User's time left in minutes				|
|TIMEON       |TIMEUSED |Time used this call in minutes|
|TLEFT        |         |Time left (in "H:MM:SS" format)|				
|TMP          |         |Temporary file type chosen by user (e.g. "ZIP") (new in v3.18c) |
|TPERC        |         |Time allowed per call (in "H:MM:SS" format) 	|
|TPERD        |         |Time allowed per day (in "H:MM:SS" format)	|		
|TTODAY       |         |Time used by user today (in "H:MM format) |
|TTOTAL       |         |Total time used by user for all previous calls/logons (in "HH:MM" format) |
|TUSED        |         |Time used this call (in "H:MM:SS" format)	|		
|UDR          |         |User's upload/download byte ratio, as a percentage (not capped at 100) |
|UDFR         |         |User's upload/download file ratio, as a percentage (not capped at 100) |
|UPBYTES      |         |Total bytes uploaded by user			|
|UPFILES      |UPS      |Total files uploaded by user		|	
|UPK          |         |Total kibibytes uploaded by user		|
|USERNUM      |         |User's number (1-based index into user database) |
|ZIP          |         |User's zip/postal code                        |  

===== Terminal Information / Control =====

The currently supported //Terminal Control// @-codes:

^Code            ^Aliases ^Description ^
|BPS             |BAUD    |Current emulated modem (DCE) bit-rate, in bps |
|BPS://n//       |        |Set the current emulated rate to 0 (unlimited), or 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 76800, or 115200 bps|
|BEEP            |BELL    |Generate a beep sound on the user's terminal |
|CLS             |        |Clear the screen  |
|CLEAR           |        |Clear the screen, all existing mouse hot-spots and eat the next newline sequence |
|CLEAR_HOT       |        |Clear all existing mouse hot-spots |
|HOT             |        |Define a new mouse hot-spot color (the color of the @-code defines the hot-spot attributes) |
|HOT:HUNGRY      |        |Define a new mouse hot-spot color for defining hungry hot-spots (hungry hot-spots are the default type) |
|HOT:STRICT      |        |Define a new mouse hot-spot color for defining strict hot-spots |
|HOT:OFF         |        |Disable hot-spot by color/attribute definitions for the remainder of the file (or until re-enabled) |
|~//ctext//       |       |Define a single hungry hot-spot (where the displayed text and command keys are the same) and //ctext// may contain C-escape sequences |
|~//ctext//~//cmd// |     |Define a single hungry hot-spot with an alternate command to stuff in the keyboard input buffer and //ctext// may contain C-escape sequences  |
|`//ctext//       |       |Define a single strict hot-spot (where the displayed text and command keys are the same)  //ctext// may contain C-escape sequences  |
|`//ctext//`//cmd// |     |Define a single strict hot-spot with an alternate command to stuff in the keyboard input buffer and //ctext// may contain C-escape sequences  |
|CRLF            |        |Send a carriage return/line-feed pair   |
|CHECKMARK       |        |Send a check mark symbol appropriate for the user's terminal |
|COPY            |        |Send a copyright symbol appropriate for the user's terminal, e.g. "(c)" |
|SOUNDCOPY       |        |Send a sound-copyright symbol appropriate for the user's terminal, e.g. "(P)" |
|REGISTERED      |        |Send a registered mark appropriate for the user's terminal, e.g. "(r)" |
|TRADEMARK       |        |Send a trademark symbol appropriate for the user's terminal, e.g. "(tm)" |
|ELLIPSIS        |        |Send a ellipsis (...) appropriate for the user's terminal | 
|DEGREE_C        |        |Send a degree Celsius symbol appropriate for the user's terminal |
|DEGREE_F        |        |Send a degree Fahrenheit symbol appropriate for the user's terminal |
|YESCHAR         |        |Print the character that corresponds with an affirmative "Yes" answer key (e.g. ''Y'') |
|NOCHAR          |        |Print the character that corresponds with an negative "No" answer key (e.g. ''N'') |
|QUITCHAR        |        |Print the character that corresponds with a "quit" command key (e.g. ''Q'') |
|EOF             |        |End-of-file (stop parsing/displaying) |
|PAUSE           |MORE    |Force a screen pause and a ''[Hit a key]'' prompt, if 'N' or 'Q' are typed, the displayed message/file is aborted |
|PON             |AUTOMORE|Toggle automatic screen pause on |
|POFF            |NOPAUSE |Toggle automatic screen pause off |
|RESETPAUSE      |        |Reset the automatic screen pause line counter |
|GETKEY          |        |Wait indefinitely for any key press before continuing |
|CONTINUE        |        |Wait indefinitely for any key press before continuing and abort the message/file display if 'N' or 'Q' are typed | 
|WAIT://n//      |        |Wait up to //n// 10ths of a second for a key press before continuing |
|DELAY://n//     |        |Wait //n// 10ths of a second before continuing |
|UP://n//        |        |Move cursor up //n// rows                   |
|DOWN://n//      |        |Move cursor down //n// rows                 |
|RIGHT://n//     |        |Move cursor right //n// columns             |
|LEFT://n//      |        |Move cursor left //n// columns              |
|GOTOXY://x,y//  |        |Move cursor to //x/////y// coordinate (1-based) |
|POS://x//       |        |Move cursor to column //x// (1-based) |
|HOME            |        |Home cursor (to upper left), don't clear the screen |
|CLRLINE         |        |Clear the current line (cursor to first column)|
|CLR2EOL         |        |Clear to end of line (cursor doesn't move)|
|CLR2EOS         |        |Clear to end of screen (cursor doesn't move)|
|PUSHXY          |        |Save current cursor position            |
|POPXY           |        |Restore saved cursor position           |
|HANGUP          |        |Disconnect the user                     |
|COLS            |        |Number of terminal columns              |
|ROWS            |        |Number of terminal rows                 |
|TERM            |        |Terminal-type name (i.e. 'ANSI', 'RIP', 'PETSCII', or 'DUMB') |
|CHARSET         |        |Terminal character set supported (i.e. 'UTF-8', 'CP437', 'PETSCII', or 'US-ASCII') |
|WORDWRAP        |        |Word-wrap the the following text        |
|WRAPOFF         |        |Mark the end of a word-wrapped text block |
|CENTER          |        |Middle-align the remaining text on the line |
|SYSONLY         |        |Toggle off/on visibility for non-sysops |
|SHOW://ars//    |        |Turn off the display of the following text for users not meeting the specified [[access:requirements|Access Requirements String]] (without spaces). |
|SHOW            |        |Turn on the display of following text for all users |
|FILL://ctext//  |        |Repeat the specified //ctext// (may contain C-escape sequences), filling the current line (to terminal columns - 1)  |
|WIDE://text//   |        |Display specified //text// double-wide, using Unicode "fullwidth" characters if possible |
|U+//code//      |        |Send a Unicode character code point (in hexadecimal) to UTF-8 terminal or an automatic fallback character, if supported((Not all Unicode code points support fallback characters for ASCII/CP437/PETSCII terminals)) |
|U+//code//://text// |        | Send a Unicode character code point, specifying fallback string |
|U+//code//,//char// |        | Send a Unicode character code point, specifying fallback character value in hexadecimal (or ''0'' for //none//) |
|U+//code//!//char// |        | Send a Unicode character code point, specifying fallback character only to used when no automatic fallback is available |
|!//x// |                     | Execute the terminal/attribute control sequences for one or more [[Ctrl-A Codes]] (operands) represented by //x//|
==== C-Text ====

Some @-code arguments (e.g. //ctext// and ''strftime''-formatted //fmt//) support escape sequences similar to [[wp>Escape sequences in C]], e.g.:

^ Sequence ^ Expands to ^
| ''\a''          | Alarm (BEL, Ctrl-G) |
| ''\b''          | Backspace (Ctrl-H) |
| ''\e''          | Escape (Ctrl-[) |
| ''\f''          | Form-feed (Ctrl-L) |
| ''\n''          | Line-feed (Ctrl-J) |
| ''\r''          | Carriage-return (Ctrl-M) |
| ''\t''          | Horizontal tab (Ctrl-I) |
| ''\\''          | ''\'' |
| ''\x03''        | Cancel / End of text (Ctrl-C) |
| ''\x20''        | Space |
| ''\x2D''        | ''-'' |
| ''\x3A''        | '':'' |
| ''\x40''        | ''@'' |
| ''\x7C''        | ''|'' |

==== Unicode ====
Only UTF-8 terminals support Unicode. For other terminals (TTY/ASCII, CP437, and PETSCII), an equivalent "fallback" character may be automatically available or when using the ''U+'' @-codes, explicitly specified in the @-code itself.

The 'U+' @-code supports additional syntax to allow the sysop to specify the CP437 fallback character:
  * ''@U+<code>:<text>@'': Send a Unicode character with specified fallback character sequence (string)
  * ''@U+<code>,<char>@'': Send a Unicode character with specified fallback character, in hexadecimal (specify ''0'' to send //no// character to non-UTF-8 terminals)
  * ''@U+<code>!<char>@'': Send a Unicode character with specified fallback character to be used //only// when no automatic fallback character is supported

=== Examples ===

^ @-code        ^ UTF-8 ^  CP437  ^ US-ASCII ^
| WIDE:Test     |  ''Ｔｅｓｔ'' |  ''T e s t''  |  ''T e s t''  |
| CHECKMARK     |  ''✓''  |  ''√''    |  ''+''    |
| COPY          |  ''©''  |  ''(C)''   |  ''(C)''  |
| TRADEMARK     |  ''™''  |  ''(TM)''  |  ''(TM)''  |
| ELLIPSIS      |  ''…''  |  ''...''   |  ''...''   |
| U+20AC        |  ''€''  |            |            |
| U+20AC,24     |  ''€''  |  ''$''     |  ''$''     |
| U+2265        |  ''≥''  |  ''≥''     |  ''>''     |
| U+2265!a8     |  ''≥''  |  ''≥''     |  ''>''     |
| U+2265,a8     |  ''≥''  |  ''¿''     |  ''?''     |
| U+1F609       |  ''😉''  |           |           |
| U+1F609:;-)   |  ''😉''  |  '';-)''  |  '';-)''  |


===== External Content =====

The currently supported //External Content// @-codes:

^Code             ^Description ^
|MENU://filename//    |Display a menu file from the ''[[dir:text]]/menu'' directory|
|CONDMENU://filename//|Display a menu file from the ''[[dir:text]]/menu'' directory, only if it exists (conditionally)|
|TYPE://filename//    |Display a specific filename (may include [[:config:cmdline#specifiers]]) |
|INCLUDE://filename// |Display a specific filename (may include [[:config:cmdline#specifiers]]) without a trailing CR/LF pair |
|EXEC://module//      |Execute an in-process module (Baja or JavaScript) from the ''[[dir:exec]]'' directory|
|EXEC_XTRN://code//   |Execute an external online program (e.g. door) by specifying the internal code|
|SETSTR://str//       |Sets the current Baja/PCMS command string to //str//|
|STR              |Display the current Baja/PCMS command string value |\
|STRVAR://name//      |Display the contents of a Baja/PCMS command shell string variable, specify //name// in ALL-CAPS unless ''baja -c'' was used((this feature only works for variables defined in command shells)) |
|JS://name//          |Display the value of a named JavaScript property |
|TEXT://number//      |Display the specified string number from the ''[[dir:ctrl]]/[[custom:text.dat]]'' file.|
===== See Also =====
  * [[custom:menu_files|Menu Files]]
  * [[custom:|Customization]]
  * [[custom:ctrl-a_codes|ctrl-a (Attribute) codes]]
  * [[http://synchro.net/docs/customization.html#MessageVariables|Old documentation of this feature (stale)]]

{{tag>customization}}
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