NOTE: CAPS indicate the SHORTest legal subset:
| FUNCTION | COMMAND | NOTES |
| COMMA PAUSE | [:COMMa DDD] | Default is 95ms DDD is delta +/- from 95 |
| DEFINE VOICE | [:DEFIne XX DD (SAVE)] | XX is vocal param |
| (Alternate) | [:DV XX DD (SAVE)] | DD is decimal value. SAVE => voice VAL |
| DIAL TONE | [:DIAL "D,ddd-ddd-dddd"] | Comma causes pause in dial sequence |
| ENABLE: | [:ENABle] | After flush cmd or after FLUSH_SPEECH |
| ERROR: | [:ERROr Ignore] | Ignores all errors |
| [:ERROr Text] | Error as text string | |
| [:ERROr Escape] | Returns esc seq | |
| [:ERROr Speak] | Speaks error msg | |
| [:ERROr TOne] | Tone on cmd error | |
| FLUSH: | [:FLUSh All] (OBSOLETE) | No longer available |
| [:FLUSh Until DD] | Until Index DD | |
| [:FLUSh Mask DD] | Mask & Index Match | |
| [:FLUSh Mask After DD] | After Index DD | |
| [:FLUSh Mask Speech] | Cmds still executed | |
| CTRL C² | Stop/flush. Returns CTRL A | |
| INDEX: | [:INDEx Mark DD] | Insert Index Mark (DD is index value) |
| [:INDEx Reply DD] | Insert Index & Reply when spoken | |
| [:INDEx Reply Query] | Respond with last index seen | |
| LANGUAGE | [:LANG ENGlish] | Speak English (default) |
| [:LANG Spanish] | Speak Spanish | |
| LOAD VARIABLES | [:LOADv XX YY] | XX, decimal val 0-9 YY is cmd variable. Used with Set Var |
| LOG | [:LOG TExt ON/OFf] | Log all text Default is off |
| [:LOG Phonemes ON/OFF] | Log phonemes | |
| MODES | [:MODE Math ON/OFf] | Math symbols spoken Default Off (except Citation) |
| [:MODE Europe ON/OFf] | European monetary pronunciation. | |
| [:MODE SPell ON/OFf] | Spell all words | |
| [:MODE Name ON/OFf] | Say proper names (Optional feature) |
|
| [:MODE Citation ON/OFf] | Some words spoken differently when spoken alone. | |
| [:MODE Latin ON/OFf] | American/Castilian Spanish switch. | |
| PAUSE | [:PAUSe DDD] Ctrl-N ² |
DDD in 1/100 of sec (Asynch command) |
| PERIOD PAUSE | [:PERIod DDD] | Default = 470ms DDD is delta from 470 |
| PHONEME INTERPRETATION | [:PHONeme ARpabet (SPeak/ ON/OFf] | Speak text within square brackets as Arpabet phonemes. Default off |
| PITCH CHANGE | [:PITCh DD] | Default = 35Hz DD is delta from 35 |
| POWER STATUS² | [:POWEr Sleep DD] | Low power mode after DD sec |
| [:POWEr Interval DD] | Low power beep DD sec | |
| [:POWEr Speak] | Speak battery status | |
| [:POWEr STatus] | Receive from Express power/battery status | |
| PRONOUNCE NAME | [:PRON Name]Name | Speak proper name (Option) |
| PUNCTUATION | [:PUNCt None] | No punct spoken |
| [:PUNCt Some] | Some punct spoken (default) | |
| [:PUNCt All] | All punct spoken | |
| [:PUNct Pass] | Bypass some preprocssing | |
| RATE SELECTION | [:RATE DDD] | Default = 180wpm Range 75-650 |
| RESUME | [:RESUme] Ctrl-O ² |
Resume speech |
| SAY MODE | [:SAY Clause] | Speak at clause end |
| [:SAY Word] | Speak at word end | |
| [:SAY Letter] | Speak at letter end | |
| SET VARIABLES | [:SETV DD] | DD is 0-9 Set vars previously loaded. Used with Load Vars |
| SYNCHRONIZATION | [:SYNC] CTRL K (obsolete) |
Act as clause end. Synchs async commands. |
| TIMEOUT | [:TIMEout D] | Force speech after D seconds. Default is NONE |
| TONE | [:TONE DD,dd] | DD is Freq in Hz dd is Duration in ms |
| TSR² | [:TSR ON/OFF ] | Sends private character sequences to the TSR. Off disables the transmission.Default is on |
| TYPING TABLE | [:TYPE DD (:) PHONE] | DD is Keyboard code : = use pitch shift PHONE is a phoneme |
| VERSION² | [:VERSion Speak] |
Speaks firmware version |
| [:VERsion STatus] | Receive firmware version from Express | |
| VOICE SELECTION | [:NAme X] | X=P,H,F,D,B,R,U,W,K,V |
| (Alternate) | [:NX] | No space between N and X |
| VOLUME¹ | [:VOLUme Set DD] | 0-99, Default = 5 |
| [:VOLUme Up DD] | Increases volume by DD | |
| [:VOLUme Down DD] | Decreases volume by DD | |
| (Alternate) | [:VS DD] | Set volume to DD |
| XON/XOFF² | Ctrl-Q/Ctrl-S | Serial line handshaking |
| ¹ DECtalk PC ² DECtalk Express Last updated 10/28/96 |