| ABOUT | displays lists and information on tasks, verbs, adverbs | 
| ABS | returns absolute value of argument | 
| ACOS | Returns arc cosine of argument (half-circle) | 
| ACTNOISE | puts estimate of actual image uncertainty and zero in header | 
| ADDBEAM | Inserts clean beam parameters in image header | 
| ADDDISK | makes a computer’s disks available to the current AIPS session | 
| ALLDEST | Delete a group or all of a users data files | 
| ALTDEF | Sets frequency vs velocity relationship into image header | 
| ALTSWTCH | Switches between frequency and velocity in image header | 
| APROPOS | displays all help 1-line summaries containing specified words | 
| 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) | 
| AVEOT | Advances tape to end-of-information point | 
| AVFILE | Moves tape forward or back to end-of-file marks | 
| AVMAP | Advance tape by one image (IBM-CV = obsolete tape file) | 
| AXDEFINE | Define or modify an image axis description | 
| BAMODIFY | edits characters in a line of a batch work file | 
| BATCH | starts entry of commands into batch-job work file | 
| BATCLEAR | removes all text from a batch work file | 
| BATEDIT | starts an edit (replace, insert) session on a batch work file | 
| BATLIST | lists the contents of a batch work file | 
| BDF2AIPS | Read EVLA ASDM/BDF data into AIPS | 
| BDFLIST | List contents of EVLA ASD data file | 
| BY | gives increment to use in FOR loops in POPS language | 
| CALDIR | lists calibrator source models available as AIPS FITS files | 
| CAT2LOG | list one or more entries in the user’s data directory: #2 file name | 
| CAT3LOG | list one or more entries in the user’s data directory: #3 file name | 
| CAT4LOG | list one or more entries in the user’s data directory: #4 file name | 
| CAT5LOG | list one or more entries in the user’s data directory: #5 file name | 
| CATALOG | list one or more entries in the user’s data directory | 
| CATOLOG | list one or more entries in the user’s data directory: out file name | 
| CEIL | returns smallest integer greater than or equal the argument | 
| CELGAL | switches header between celestial and galactic coordinates | 
| CHAR | converts number to character string | 
| CHARMULT | Changes the multiplication factor for TV characters | 
| CHKNAME | Checks for existence of the specified image name | 
| CLR2NAME | clears adverbs specifying the second input image | 
| CLR3NAME | clears adverbs specifying the third input image | 
| CLR4NAME | clears adverbs specifying the fourth input image | 
| CLR5NAME | clears adverbs specifying the fifth input image | 
| CLRMSG | deletes messages from the user’s message file | 
| CLRNAME | clears adverbs specifying the first input image | 
| CLRONAME | clears adverbs specifying the first output image | 
| CLRSTAT | remove any read or write status flags on a directory entry | 
| CLRTEMP | clears the temporary literal area during a procedure | 
| CODECIML | Convert between decimal and sexagesimal coordinate values | 
| COODEFIN | Define or modify an image axis coordinate description | 
| COPIXEL | Convert between physical and pixel coordinate values | 
| COS | returns cosine of the argument in degrees | 
| COSTAR | Verb to plot a symbol at given position on top of a TV image | 
| COWINDOW | Set a window based on coordinates | 
| CPUTIME | displays curren tcpu and real time usage of the AIPS task | 
| CURBLINK | switch TV cursor between steady and blinking displays | 
| CURVALUE | displays image intensities selected via the TV cursor | 
| DAYNUMBR | finds day nuumber of an image or uv data set | 
| DEFAULT | Verb-like sets adverbs for a task or verb to initial values | 
| DELAY | Verb to pause AIPS for DETIME seconds | 
| DELBOX | Verb to delete boxes with TV cursor & graphics display. | 
| DFILEBOX | Verb to delete Clean boxes with TV cursor & write to file | 
| DISMOUNT | disables a magnetic tape and dismounts it from the tape drive | 
| DOCC | Adverb to control application to Clean component files | 
| DOWNCASE | Convert a string to all lower case letters | 
| DRAWBOX | Verb to draw Clean boxes on the display | 
| DUMP | displays portions of the POPS symbol table in all formats | 
| EGETHEAD | returns parameter value from image header and error code | 
| EGETNAME | fills in input name adverbs by catalog slot number, w error | 
| EHEX | converts decimal to extended hex | 
| END | marks end of block (FOR, WHILE, IF) of POPS code | 
| EPOCONV | Convert between J2000 and B1950 coordinates | 
| EPOSWTCH | Switches between B1950 and J2000 coordinates in header | 
| 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 | 
| EXTDEST | deletes one or more extension files | 
| EXTLIST | lists detailed information about contents of extension files | 
| FILEBOX | Verb to reset Clean boxes with TV cursor & write to file | 
| FILEZAP | Delete an external file | 
| FLOOR | returns largest integer ¡= argument | 
| FOR | starts an iterative sequence of operations in POPS language | 
| FREESPAC | displays available disk space for AIPS in local system | 
| GAMMASET | changes the gamma-correction exponent used in the TV OFM | 
| GET2NAME | fills 2nd input image name parameters by catalog slot number | 
| GET3NAME | fills 3rd input image name parameters by catalog slot number | 
| GET4NAME | fills 4th input image name parameters by catalog slot number | 
| GET5NAME | fills 5th input image name parameters by catalog slot number | 
| GETDATE | Convert the current date and time to a string | 
| GETHEAD | returns parameter value from image header | 
| GETITIME | Verb to return the UV data integration time. | 
| GETNAME | fills 1st input image name parameters by catalog slot number | 
| GETONAME | fills 1st output image name parameters by catalog slot number | 
| GETPOPSN | Verb to return the pops number on the stack | 
| GETTHEAD | Returns keyword values from a table header, also column #, # rows | 
| GETVERS | finds maximum version number of an extension file | 
| GO | starts a task, detaching it from AIPS or AIPSB | 
| GRBLINK | Verb which blinks 2 TV graphics planes | 
| GRCLEAR | clears the contents of the specified TV graphics channels | 
| GRDROP | deletes the specified gripe entry | 
| GREAD | reads the colors of the specified TV graphics channel | 
| GRINDEX | lists users and time of all gripe entries | 
| GRIPE | enter a suggestion or bug report for the AIPS programmers | 
| GRLIST | lists contents of specified gripe entry | 
| GROFF | turns off specified TV graphics channelS | 
| GRON | turns on specified TV graphics channelS | 
| GWRITE | Sets the colors of the specified TV graphics channel | 
| HELP | displays information on tasks, verbs, adverbs | 
| HINOTE | adds user-generated lines to the history extension file | 
| HITEXT | writes lines from history extension file to text file | 
| HSA | puts the list of HSA antennas in the current file on stack | 
| HUEWEDGE | Show a wedge on the TV suitable for TVHUEINT displays | 
| IM2HEAD | displays the image 2 header contents to terminal, message file | 
| IM2TV | Verb to convert pixel coordinates to TV pixels | 
| IM3HEAD | displays the image 3 header contents to terminal, message file | 
| IM4HEAD | displays the image 4 header contents to terminal, message file | 
| IM5HEAD | displays the image 5 header contents to terminal, message file | 
| IMCENTER | returns pixel position of sub-image centroid | 
| IMDIST | determines spherical distance between two pixels | 
| IMERASE | replaces an image portion of the TV screen with zeros | 
| IMHEADER | displays the image header contents to terminal, message file | 
| IMOHEAD | displays the output image header contents | 
| IMPOS | displays celestial coordinates selected by the TV cursor | 
| IMSTAT | Returns statistics of a sub-image | 
| IMVAL | returns image intensity and coordinate at specified pixel | 
| IMWEDGE | load step wedge of full range of image values to TV | 
| IMXY | returns pixel coordinates selected by the TV cursor | 
| INP | displays adverb values for task, verb, or proc - quick form | 
| INPUTS | displays adverb values for task, verb, or proc - to msg file | 
| JOBLIST | lists contents of a submitted and pending batch job | 
| KLEENEX | ends an AIPS interactive session wiping the slate klean | 
| LENGTH | returns length of string to last non-blank character | 
| LN | returns the natural logarithm of the argument | 
| LOG | returns the base-10 logarithm of the argument | 
| M2CAT | displays images in the user’s catalog directory for IN2DISK | 
| M3CAT | displays images in the user’s catalog directory for IN3DISK | 
| M4CAT | displays images in the user’s catalog directory for IN4DISK | 
| M5CAT | displays images in the user’s catalog directory for IN5DISK | 
| MAX | returns the maximum of its two arguments | 
| MAXFIT | returns pixel position and image intensity at a maximum | 
| MCAT | lists images in the user’s catalog directory on disk INDISK | 
| MFITSET | gets adverbs for running IMFIT and JMFIT | 
| MIN | returns the minimum of its two arguments | 
| MOCAT | displays images in the user’s catalog directory for OUTDISK | 
| MOD | returns remainder after division of 1st argument by 2nd | 
| MODULUS | returns square root of sum of squares of its two arguments | 
| MOUNT | makes a tape drive available to user’s AIPS and tasks | 
| NAMEGET | fills 1st input image name parameters by default matching | 
| OBITIMAG | Access to OBIT task Imager without self-cal or peeling | 
| OBITMAP | Simplified access to OBIT task Imager | 
| OBITPEEL | Access to OBIT task Imager with self-cal and peeling | 
| OBITSCAL | Access to OBIT task Imager with self-cal, NOT peeling | 
| OFFPSEUD | Verb which deactivates all pseudo-color displays | 
| OFFSCROL | Verb which deactivates scroll of an image | 
| OFFTRAN | Verb which restores transfer function to normal | 
| OFFZOOM | Verb which returns the hardware IIS zoom to normal | 
| OFMADJUS | interactive linear adjustment of current TV OFM lookup tables | 
| OFMCOLOR | Verb to access many OFMs to enhance TV pseudo-color displays | 
| OFMCONT | creates/modifies TV color OFMs with level or wedged contours | 
| OFMDIR | lists names of the user’s and system’s OFM files from OFMFIL | 
| OFMGET | loads TV OFMS from a system or user OFM save file | 
| OFMLIST | lists the current TV OFM table(s) on the terminal or printer | 
| OFMSAVE | saves the TV’s current OFM lookup table in a text file | 
| OFMSTRCH | interactive modification of current TV OFM lookup tables | 
| OFMTWEAK | interactive modification of current TV OFM lookup tables | 
| OFMZAP | deletes an OFM lookup table save file | 
| 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). | 
| PLGET | gets the adverbs used to make a particular plot file | 
| 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 | 
| PRTHI | prints selected contents of the history extension file | 
| PRTMSG | prints selected contents of the user’s message file | 
| PSEUDOVB | Declares a name to be a symbol of type pseudoverb | 
| PUTHEAD | Verb to modify image header parameters. | 
| PUTTHEAD | inserts a given value into a table keyword/value pair | 
| PUTVALUE | Verb to store a pixel value at specified position | 
| Q2HEADER | Verb to summarize the image 2 header: positions at center | 
| Q3HEADER | Verb to summarize the image 3 header: positions at center | 
| Q4HEADER | Verb to summarize the image 4 header: positions at center | 
| Q5HEADER | Verb to summarize the image 5 header: positions at center | 
| QGETVERS | finds maximum version number of an extension file quietly | 
| QHEADER | Verb to summarize the image header: positions at center | 
| QIMVAL | returns image intensity and coordinate at specified pixel | 
| QINP | displays adverb values for task, verb, or proc - restart form | 
| QOHEADER | Verb to summarize the output image header: center positions | 
| QUEUES | Verb to list all submitted jobs in the job queue | 
| RANDOM | Compute a random number from 0 to 1 | 
| READ | Read a value from the users terminal | 
| REBOX | Verb to reset boxes with TV cursor & graphics display. | 
| RECAT | Verb to compress the entries in a catalog file | 
| REHEX | converts extended hex string to decimal | 
| REMDISK | removes a computer’s disks from the current AIPS session | 
| REMOVIE | Verb to rerun a previously loaded (TVMOVIE) movie | 
| RENAME | Rename a file (UV or Image) | 
| RENUMBER | Verb to change the catalog number of an image. | 
| REROAM | Verb to use previous roam image mode, then does roam | 
| RESCALE | Verb to modify image scale factor and offset | 
| 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. | 
| REVERSN | checks disk for presence of extension files | 
| REWIND | Verb to rewind a tape | 
| ROAM | Roam around an image too large for the display. | 
| ROAMOFF | Verb to recover image from roam display in simple display mode | 
| 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 | 
| SCAT | lists scratch files in the user’s catalog directory on all disks | 
| SCRATCH | delete a procedure from the symbol table. | 
| SCRDEST | Verb to destroy scratch files left by bombed tasks. | 
| SETDEBUG | Verb to set the debug print and execution level | 
| SETMAXAP | Examines/alters system parameter limiting dynamic pseudo-AP | 
| SETSLICE | Set slice endpoints on the TV interactively | 
| 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 | 
| SHOW | Verblike to display the TELL adverbs of a task. | 
| SIN | Compute the sine of a value | 
| SIZEFILE | return file size plus estimate of IMAGR work file size | 
| SPY | Verb to determine the execution status of all AIPS tasks | 
| SQRT | Square root function | 
| STALIN | revises history by deleting lines from history extension file | 
| STARTTV | Restarts XAS (TV), MS, TK servers that have disappered | 
| 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 | 
| SYSTEM | Verb to send a command to the operating system | 
| T1VERB | Temporary verb for testing (also T2VERB...T9VERB) | 
| TABGET | returns table entry for specified row, column and subscript. | 
| TABPUT | replaces table entry for specified row, column and subscript. | 
| TAN | Tangent function | 
| TAPES | Verb to show the TAPES(s) available | 
| 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 | 
| THEN | Specified the action if an IF test is true | 
| TK1SET | Verb to reset 1D gaussian fitting initial guess. | 
| TKAGUESS | Verb to add a plot of the slice model guess directly on TEK | 
| TKAMODEL | Verb to add slice model display directly on TEK | 
| TKARESID | Verb to add slice model residuals directly on TEK | 
| TKASLICE | Verb to add a slice display on TEK from slice file | 
| TKERASE | Erase the graphics screen or window | 
| TKGUESS | Verb to display slice model guess directly on TEK | 
| TKMODEL | Verb to display slice model directly on TEK | 
| TKPOS | Read a position from the graphics screen or window | 
| TKRESID | Verb to display slice model residuals directly on TEK | 
| TKSET | Verb to set 1D gaussian fitting initial guesses. | 
| TKSLICE | Verb to display slice file directly on TEK | 
| TKVAL | Verb to obtain value under cursor from a slice | 
| TKXY | Verb to obtain pixel value under cursor | 
| TO | Specifies upper limit of a FOR loop | 
| TPHEAD | Verb to list image header from FITS or IBM-CV tape | 
| TPUT | Verb-like puts adverbs from a task in file for TGETs | 
| TUGET | Verb-like gets adverbs from last GO of a task from another user # | 
| TV1SET | Verb to reset 1D gaussian fitting initial guess on TV plot. | 
| TV2COLOR | Verb to activate a 2-color pseudo-color display on the TV | 
| TV3COLOR | Verb to initiate 3-color display using 3 TV channels | 
| TVACOMPS | Verb to add slice model components directly on TV graphics | 
| TVAGUESS | Verb to re-plot slice model guess directly on TV graphics | 
| TVAMODEL | Verb to add slice model display directly on TV graphics | 
| TVANOT | Verb to load anotation to the TV image or graphics | 
| TVARESID | Verb to add slice model residuals directly on TV graphics | 
| TVASLICE | Verb to add a slice display on TV graphics from slice file | 
| TVBANDW | Verb to activate three types of black and white TV enhancements | 
| TVBLINK | Verb which blinks 2 TV planes, can do enhancement also | 
| TVBOX | Verb to set boxes with TV cursor & graphics display. | 
| TVCLEAR | Verb to clear image from TV channel(s) | 
| TVCOMPS | Verb to display slice model components directly on TV graphics | 
| TVCUBE | Verb to load a cube into tv channel(s) & run a movie | 
| TVDATA | displays information about the current TV display | 
| TVFACTS | displays information about the current TV display | 
| TVFIDDLE | Verb enhances B/W or color TV image with zooms | 
| TVGUESS | Verb to display slice model guess directly on TV graphics | 
| TVHELIX | Verb to activate a helical hue-intensity TV pseudo-coloring | 
| TVHUEINT | Verb to make hue/intensity display from 2 TV channels | 
| TVILINE | Verb to draw a straight line on an image on the TV | 
| TVINIT | Verb to return TV display to a virgin state | 
| TVLABEL | Verb to label the (map) image on the TV | 
| TVLAYOUT | Verb to label the holography image on the TV with panel layout | 
| TVLINE | Verb to load a straight line to the TV image or graphics | 
| TVLOD | Verb to load an image into a TV channel | 
| TVLUT | Verb which modifies the transfer function of the image | 
| TVMBLINK | Verb which blinks 2 TV planes either auto or manually | 
| TVMLUT | Verb which modifies the transfer function of the image | 
| TVMODEL | Verb to display slice model directly on TV graphics | 
| TVMOVIE | Verb to load a cube into tv channel(s) & run a movie | 
| TVNAME | Verb to fill image name of that under cursor | 
| TVOFF | Verb which turns off TV channel(s). | 
| TVON | Turns on one or all TV image planes | 
| TVPHLAME | Verb to activate ”flame-like” pseudo-color displays | 
| TVPOS | Read a TV screen position using cursor | 
| TVPSEUDO | Verb to activate three types of pseudo-color displays | 
| TVRESID | Verb to display slice model residuals directly on TV graphics | 
| TVRESTOR | Restarts XAS (TV), MS, TK servers that have disappered | 
| TVROAM | Load up to 16 TV image planes and roam a subset thereof | 
| TVSCROL | Shift position of image on the TV screen | 
| TVSET | Verb to set slice Gaussian fitting initial guesses from TV plot | 
| TVSLICE | Verb to display slice file directly on TV | 
| TVSPLIT | Compare two TV image planes, showing halves | 
| TVSTAR | Verb to plot star positions on top of a TV image | 
| TVSTAT | Find the mean and RMS in a blotch region on the TV | 
| TVTRANSF | Interactively alters the TV image plane transfer function | 
| TVWEDGE | Show a linear wedge on the TV | 
| TVWINDOW | Set a window on the TV with the cursor | 
| TVWLABEL | Put a label on the wedge that you just put on the TV | 
| TVZOOM | Activate the TV zoom | 
| TYPE | Type the value of an expression | 
| U2CAT | list a user’s UV and scratch files on disk IN2DISK | 
| U3CAT | list a user’s UV and scratch files on disk IN3DISK | 
| U4CAT | list a user’s UV and scratch files on disk IN4DISK | 
| U5CAT | list a user’s UV and scratch files on disk IN5DISK | 
| UCAT | list a user’s UV and scratch files on disk INDISK | 
| UNQUE | remove a given job from the job queue | 
| UOCAT | list a user’s UV and scratch files on disk OUTDISK | 
| 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 | 
| 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 | 
| VLBA | puts the list of VLBA antennas in the current file on stack | 
| VPUT | Verb-like puts adverbs from a task in files for VGETs | 
| WAITTASK | halt AIPS until specified task is finished | 
| WEDERASE | Load a wedge portion of the TV with zeros | 
| XHELP | Accesses hypertext help system | 
| ZAP | Delete a catalog entry and its extension files |