| ABOUT | displays lists and information on tasks, verbs, adverbs | 
| ABS | returns absolute value of argument | 
| ACOS | Returns arc cosine of argument (half-circle) | 
| APROPOS | displays all help 1-line summaries containing specified words | 
| ARRAY | Declares POPS symbol name and dimensions | 
| ARRAY1 | General scratch array adverb | 
| ARRAY2 | General scratch array adverb | 
| ARRAY3 | General scratch array adverb | 
| ASIN | Returns arc sine of argument (half-circle) | 
| ATAN | Returns arc tangent of argument (half-circle) | 
| ATAN2 | Returns arc tangent of two arguments (full circle) | 
| BB | spare adverb for use in procedures | 
| BY | gives increment to use in FOR loops in POPS language | 
| CATNO | Specifies AIPS catalog slot number range | 
| CEIL | returns smallest integer greater than or equal the argument | 
| CHAR | converts number to character string | 
| CLRTEMP | clears the temporary literal area during a procedure | 
| COMPRESS | recovers unused POPS address space and new symbols | 
| CORE | displays the used and total space used by parts of POPS table | 
| COS | returns cosine of the argument in degrees | 
| DEBUG | turns on/off the POPS-language’s debug messages | 
| DEFAULT | Verb-like sets adverbs for a task or verb to initial values | 
| DELAY | Verb to pause AIPS for DETIME seconds | 
| DELTAX | Increment or size in X direction | 
| DELTAY | Increment or size in Y direction | 
| DENUMB | a scalar decimal number | 
| DOOSRO | calibrating amplitude and phase, and imaging VLA data | 
| DOVLAMP | Produces amp calibration file for phased-VLA VLBI data | 
| DOWNCASE | Convert a string to all lower case letters | 
| DPARM | General numeric array adverb used many places | 
| DUMP | displays portions of the POPS symbol table in all formats | 
| EDIT | enter edit-a-procedure mode in the POPS language | 
| EHEX | converts decimal to extended hex | 
| EHNUMB | an extended hexadecimal ”number” | 
| ELSE | starts POPS code done if an IF condition is false (IF-THEN..) | 
| END | marks end of block (FOR, WHILE, IF) of POPS code | 
| ENDEDIT | terminates procedure edit mode of POPS input | 
| ERASE | removes one or more lines from a POPS procedure | 
| ERROR | was there an error | 
| EVLA | puts the list of eVLA antennas in the current file on stack | 
| EXIT | ends an AIPS batch or interactive session | 
| EXP | returns the exponential of the argument | 
| EXPLAIN | displays help + extended information describing a task/symbol | 
| FINISH | terminates the entry and compilation of a procedure | 
| FLOOR | returns largest integer ¡= argument | 
| FOR | starts an iterative sequence of operations in POPS language | 
| GET | restores previously SAVEd full POPS environment | 
| GETDATE | Convert the current date and time to a string | 
| GETPOPSN | Verb to return the pops number on the stack | 
| GG | spare scalar adverb for use in procedures | 
| GRANDOM | Finds a random number with mean 0 and rms 1 | 
| HELP | displays information on tasks, verbs, adverbs | 
| HSA | puts the list of HSA antennas in the current file on stack | 
| I | spare scalar adverb for use in procedures | 
| IF | causes conditional execution of a set of POPS statements | 
| INP | displays adverb values for task, verb, or proc - quick form | 
| INPUTS | displays adverb values for task, verb, or proc - to msg file | 
| ISBATCH | declares current AIPS to be, or not to be, batch-like | 
| J | spare scalar adverb for use in procedures | 
| KK | Spare adverb for use in procedures | 
| KLEENEX | ends an AIPS interactive session wiping the slate klean | 
| LENGTH | returns length of string to last non-blank character | 
| LIST | displays the source code text for a POPS procedure | 
| LN | returns the natural logarithm of the argument | 
| LOG | returns the base-10 logarithm of the argument | 
| MAX | returns the maximum of its two arguments | 
| MIN | returns the minimum of its two arguments | 
| MOD | returns remainder after division of 1st argument by 2nd | 
| MODIFY | modifies the text of a line of a procedure and recompiles | 
| MODULUS | returns square root of sum of squares of its two arguments | 
| NOADVERB | Information about the lack of a defined adverb or verb | 
| NUMTELL | selects POPS number of task which is the target of a TELL or ABORT | 
| NX | General adverb referring to a number of things in the X direction | 
| NY | General adverb referring to a number of things in the Y direction | 
| OUTPUTS | displays adverb values returned from task, verb, or proc | 
| PARALLEL | Verb to set or show degree of parallelism | 
| PASSWORD | Verb to change the current password for the login user | 
| PCAT | Verb to list entries in the user’s catalog (no log file). | 
| PIPEAIPS | calibrating amplitude and phase, and imaging VLA data | 
| POPSDAT | lists all POPS symbols to create them for MEmory files | 
| POPSYM | Describes the symbols used in POPS | 
| Print the value of an expression | |
| PRINTER | Verb to set or show the printer(s) used | 
| PROC | Define a POPS procedure using procedure editor. | 
| PROCEDUR | Define a POPS procedure using procedure editor | 
| PSEUDOVB | Declares a name to be a symbol of type pseudoverb | 
| QINP | displays adverb values for task, verb, or proc - restart form | 
| RANDOM | Compute a random number from 0 to 1 | 
| READ | Read a value from the users terminal | 
| REHEX | converts extended hex string to decimal | 
| RENAME | Rename a file (UV or Image) | 
| RESTART | Verb to trim the message log file and restart AIPS | 
| RESTORE | Read POPS memory file from a common area. | 
| RETURN | Exit a procedure allowing a higher level proc to continue. | 
| RUN | Pseudoverb to read an external RUN files into AIPS. | 
| SAVDEST | Verb to destroy all save files of a user. | 
| SAVE | Pseudoverb to save full POPS environment in named file | 
| SCALAR | Declares a variable to be a scalar in a procedure | 
| SCANLENG | specify length of ”scan” | 
| SCRATCH | delete a procedure from the symbol table. | 
| SETDEBUG | Verb to set the debug print and execution level | 
| SG2RUN | Verb copies the K area to a text file suitable for RUN | 
| SGDESTR | Verb-like to destroy named POPS environment save file | 
| SGINDEX | Verb lists SAVE areas by name and time of last SAVE. | 
| SGUGET | Gets another user’s SAVE/GET file. | 
| SGUINDEX | Verb lists SAVE areas by name and time of last SAVE another user | 
| SIN | Compute the sine of a value | 
| SLOT | Specifies AIPS catalog slot number | 
| SPY | Verb to determine the execution status of all AIPS tasks | 
| SQRT | Square root function | 
| STORE | Store current POPS environment | 
| STQUEUE | Verb to list pending TELL operations | 
| STRING | Declare a symbol to be a string variable in POPS | 
| SUBMIT | Verb which submits a batch work file to the job queue | 
| SUBSTR | Function verb to specify a portion of a STRING variable | 
| T1VERB | Temporary verb for testing (also T2VERB...T9VERB) | 
| TAN | Tangent function | 
| TAPES | Verb to show the TAPES(s) available | 
| TASK | Name of a task | 
| TGET | Verb-like gets adverbs from last GO of a task | 
| TGINDEX | Verb lists those tasks for which TGET will work. | 
| TGUINDEX | Verb lists those tasks for which TUGET will work another user | 
| THEDATE | contains the date and time in a string form | 
| THEN | Specified the action if an IF test is true | 
| TO | Specifies upper limit of a FOR loop | 
| TPUT | Verb-like puts adverbs from a task in file for TGETs | 
| TT | spare scalar adverb for use in procedures | 
| TUGET | Verb-like gets adverbs from last GO of a task from another user # | 
| TYPE | Type the value of an expression | 
| UPCASE | Convert a string to all upper case letters | 
| USAVE | Pseudoverb to save full POPS environment in named file | 
| VALUE | Convert a string to a numeric value | 
| VERB | Declares a name to be a symbol of type verb | 
| VERSION | Specify AIPS version or local task area | 
| VGET | Verb-like gets adverbs from version task parameter save area | 
| VGINDEX | Verb lists those tasks for which VGET will work. | 
| VLA | puts the list of VLA antennas in the current file on stack | 
| VLARUN | Calibrating amplitude and phase, and imaging VLA data | 
| VLBA | puts the list of VLBA antennas in the current file on stack | 
| VLBAMPHC | applies VLBARUN calibration to additional phase stopping centers | 
| VLBAPIPE | Applies amplitude and phase calibration procs to VLBA data | 
| VLBARUN | applies amplitude and phase calibration procs to VLBA data | 
| VNUMBER | Specifies the task parameter (VGET/VPUT) save area | 
| VPUT | Verb-like puts adverbs from a task in files for VGETs | 
| WAITTASK | halt AIPS until specified task is finished | 
| WHILE | Start a conditional statement | 
| X | spare scalar adverb for use in procedures | 
| XHELP | Accesses hypertext help system | 
| Y | spare scalar adverb for use in procedures |