(+ <NUMBER> <NUMBER> ...)
Returns the sum of two or more numbers.
(- <NUMBER> <NUMBER> ...)
Returns the difference of two or more numbers.
(* <NUMBER> <NUMBER> ...)
Returns the product of two or more numbers.
(/ <NUMBER> <NUMBER> ...)
Returns the quotient of two or more numbers.
(= <NUMBER> <NUMBER> ...)
Returns T if the numbers are equal, nil if not.
(/= <NUMB1> <NUMB2>)
Returns T if the numbers are not equal, nil if they are.
(< <NUMB1> <NUMB2>)
Returns T if <NUMB1> is less than <NUMB2>.
(<= <NUMB1> <NUMB2>)
Returns T if <NUMB1> is equal to or less than <NUMB2>.
(> <NUMB1> <NUMB2>)
Returns T if <NUMB1>is greater than <NUMB2>.
(>= <NUMB1> <NUMB2>)
Returns T if <NUMB1> is equal to or greater than <NUMB2>.
(~ <NUMBER>)
Returns the bitwise of <NUMBER>.
(1+ <NUMBER>)
Returns the <NUMBER> increased by one.
(1- <NUMBER>)
Returns the <NUMBER> decreased by one.
-------------------=-----------------------
(abs <NUMBER>)
Returns the absolute value of <NUMBER>.
(and <EXPR> ...)
Returns the logical AND of a list of expressions.
Returns nil if expressions are nil.
(angle <PT1> <PT2>)
Returns the angle in radians between two points.
(angtos <ANGLE>[<MODE><PRECIS.>])
Returns the angle as a string. Mode 0=Degrees,1=Deg Min Sec,
2=Grads,3=Radians,4=Surveyor
(append <EXPR> ....)
Returns a number of lists as one list.
(apply <FUNCTION> <LIST>)
Executes function with the arguments given as a list.
(ascii <STRING>)
Returns ascii value of first character of a string.
(assoc <ITEM><ALIST>)
Searches <ALIST> for <ITEM>.
(atan <NUM1> [<NUM2>])
Returns the arctangent of <NUM1> or <NUM1>/<NUM2>.
(atof <STRING>)
Returns the conversion of a string into a real.
(atoi <STRING>)
Returns the conversion of a string into an integer.
(atom <ITEM>)
Returns T if <ITEM> is not a list.
-------------------=-----------------------
(Boole <FUNC> <NUMB1> <NUMB2)
Returns Boolean bitwise truth comparisons.
<NUMB>'s must be integers.
(boundp <ATOM>)
Returns T if <ATOM> has a value bound to it.
-------------------=-----------------------
(car <LIST>)
Returns the first element of a list.
(caar <LIST>)
Returns first element of the first element of a list.
(cadar <LIST>)
Returns last element of the first element of a list.
(cadr <LIST>)
Returns the second element of a list.
(caddr <LIST>)
Returns the third element of a list.
(cdr <LIST>)
Returns all but the first element of a list.
(cdar <LIST>)
Returns second element of the first element of list.
(cddr <LIST>)
Returns all but first element of last element list.
(chr <NUMBER>)
Returns the string represented by an ascii value.
(close <FILENAME>)
Closes a file.
(command <ARGS>...)
Executes an AutoCAD command.
(cond
(<TEST1><RESULT1>)
...)
Evaluates any number of lists as arguments.
(cons <NEW FIRST ELEMENT><LIST>)
Contructs a new list.
(cos <ANGLE>)
Returns the cosine of an angle.
-------------------=-----------------------
(defun <SYM><ARG LIST><EXPR>...)
Defines an AutoLISP function.
(distance <PT1> <PT2>)
Returns the distance between two points.
-------------------=-----------------------
(entnext [<ENAME>])
Returns the first non-deleted entity after <ENAME>.
(entlast)
Returns the last non-deleted entity in the database.
(entsel [<PROMPT>])
Selects a single entity by a point pick.
(entdel <ENAME>)
Deletes the entity <ENAME> or undeletes it if it has already been deleted.
(entget <ENAME>)
Returns <ENAME> from the database as a list.
(entmod <ENAME>)
Updates <ENAME> in the database. NOT for blocks or polylines
(entupd <ENAME>)
Updates <ENAME> in the database. Use for polylines or blocks.
(eq <EXPR1> <EXPR2>)
Returns T if expressions are bound to same object.
(equal <EXPR1> <EXPR2>)
Returns T if the expressions are equal.
(eval <EXPR>)
Evalutes an expression.
(exp <NUMBER>)
Returns E to the power <NUMBER>.
(expt <BASE> <NUMBER>)
Returns <BASE> to the power <NUMBER>.
-------------------=-----------------------
(findfile <FILENAME>)
Searches all paths to find <FILENAME>.
(fix <NUMBER>)
Converts <NUMBER> to an integer.
(float <NUMBER>)
Converts <NUMBER> to a real.
(foreach <NAME><LIST><EXPR>)
Evaluates <EXPR> for each element in the <LIST>
and assigns to <NAME>.
-------------------=-----------------------
(gcd <NUM1> <NUM2>)
Returns the greatest common denominator.
(getangle [<PT>][<PROMPT>])
Pauses for input of an angle at optional starting point <PT>.
(getcorner [<PT>][<PROMPT>])
Getpoint function - draws triangle as crosshairs move.
(getdist [<PT>][<PROMPT>])
Pauses for input of distance at optional start point.
(getenv [<VARIABLE>])
Returns string value assigned to a system variable.
(getkword [<PROMPT>])
Requests a keyword from the user.
(getorient [<PT>][<PROMPT>])
Returns angle in radians from current orientation.
(getpoint [<PT>][<PROMPT>])
Pauses for input of an angle at optional point <PT>.
(getreal [<PROMPT>])
Pauses for input of a real number.
(getstring [<CR>][<PROMPT>])
Pauses for input of a string.
(getvar <varname>)
Retrieves the value of an AutoCAD system variable.
(graphscr)
Flips from text screen to graphics screen.
(grclear)
Clears the graphics screen.
(grdraw <from><to><color>[<highlight>])
Draws a vector between two points.
(grtext <box><text><highlight>])
Write to text portion of graphics screen.
(grread <track>)
Allows AutoLISP to read AutoCADs input devices.
-------------------=-----------------------
(if <testexpr><thenexpr>[<elseexpr>])
Conditionally evaluates expressions.
(inters <pt1><pt2><pt3><pt4>[<onseg>])
Returns the intersection point of two lines.
If <ONSEG> is greater than 0 the intersection
may lie past the endpoints of the lines.
(itoa <number>)
Returns the conversion of an integer to a string.
(lambda <arguments><expr>...)
Defines an "anonymous" function.
(last <list>)
Returns the last element in <LIST>.
(length <list>)
Returns the number of elements in <LIST>.
(list <expr>)
Returns the list of a number of expressions.
(listp <list>)
Returns T if the item is a list.
(load <filename>)
Loads an AutoLISP program in memory.
(log <number>)
Returns natural log of <NUMBER> as a real.
(logand <number><number>...)
Returns the logical bitwise AND of a list of numbers.
(logior <number><number>...)
Returns the logical bitwise OR of a list of numbers.
(lsh <numb1><numbits>)
Returns the logical bitwise SHIFT operator of <NUM1>
by <NUMBITS>
(mapcar <function><list1>...<listn>)
Executes <FUNCTION> on the elements of <LIST1>
through <LIST2>.
(max <number><number>...)
Returns the maximum of the numbers given.
(member <expr><list>)
Searches <LIST> for first occurence of <EXPR>
and returns the remainder of the list.
(menucmd <string>)
Switch between pages in an AutoCAD menu.
(min <NUMBER><NUMBER>...)
Returns the smallest of the numbers given.
(minusp <ITEM>)
Returns T if the item is negative.
(not <ITEM>)
Returns T if the expression is nil.
(nth <n><LIST>)
Returns the "nth" element of <LIST>.
(null <ITEM>)
Returns T if <ITEM> is bound to nil.
(numberp <ITEM>)
Returns T if <ITEM> is an integer or a real.
(open <FILENAME><MODE>)
Opens a file.
(or <EXPR>...)
Returns the logical OR of a list of expressions.
(osnap <PT><MODE-STRING>)
Returns a point by applying the osnap command.
(polor <PT><ANGLE><DISTANCE>)
Returns point at <ANGLE> and <DISTANCE> from <PT>.
(prin1 <EXPR>[<FILENAME>])
Prints <EXPR> on the screen or to <FILENAME>.
(princ <EXPR>[<FILENAME>])
Same as prin1 except control character are printed without expansion.
(print <EXPR>[<FILENAME>])
Same as prin1 except a new line is printed before <EXPR> and a space is printed after.
(progn <EXPR>...)
Evalutes each expression sequentially.
(prompt <MSG>)
Displays <MSG> on the screen PROMPT area.
(quote <EXPR>)
Returns <EXPR> unevaluated.
(read <STRING>)
Returns the first LIST obtained from <STRING>.
(read-char [<FILENAME>])
Returns a character from the keyboard buffer or from <FILENAME>.
(read-line [<FILENAME>])
Returns a string from the keyboard buffer or from <FILENAME>.
(redraw [<ENAME>][<MODE>])
Redraws either entire drawing, or <ENAME> in <MODE>.
(rem <NUM1> <NUM2> ...)
Returns the remainder of <NUM1>/<NUM2>.
(repeat <NUMBER> <EXPR> ...)
Evaluates each expression <NUMBER> times.
(reverse <LIST>)
Returns a list reversed.
(rtos <NUMBER> [<MODE><PRECIS>])
Returns a real number as a string.
(set <SYM><EXPR>)
Sets the value of a sysmbol name.
(setq <SYM1><EXPR1>...)
Sets the value of <SYM1> to <EXPR1>.
(setvar <VARNAME><VALUE>)
Sets a system variable to <VALUE>.
(sin <ANGLE>)
Returns the sine of an angle.
(sqrt <NUMBER>)
Returns the square root of <NUMBER>.
(ssget [<MODE>][<PT1><PT2>])
Returns a selection set.
(sslength <SS>)
Returns the number of entities in selection set <SS>.
(ssname <SS><INDEX>)
Returns the name of the <INDEX>th entity in selection set <SS>.
(ssadd [<ENAME>][<SS>])
Adds entities to selections sets.
(ssdel [<ENAME>][<SS>])
Deletes entities from selections sets.
(ssmemb [<ENAME>][<SS>])
Returns <ENAME> if <ENAME> is a member of selections set <SS>.
(strcase <STRING>[<WHICH>)
]
Returns <STRING> as upper case if <WHICH> is nill.
If <WHICH> is not nill the returned string will be all lower case.
(strcat <STRING1><STRING2>..)
Concatenates a series of strings.
(strlen <STRING>)
Returns the number of characters in a string.
(subst <NEWITEM><OLDITEM><LIST>)
Substitutes <NEWITEM> for <OLDITEM> in <LIST>.
(substr <STRING><START><LENGTH>)
Returns a substring of <STRING> begining at <START>
of <LENGTH> characters.
(tblnext <NAME> [<rewind>])
Scans symbol table for next entity.
(tblsearch <NAME><SYM>[<setnext>])
Searches entire symbol table for <NAME>.
(terpri)
Prints a new line on the screen.
(textscr)
Flips from graphics screen to text screen.
(trace <FUNCTIONS>...)
Debugging aid that returns the last function name.
(trans <PT><FROM><TO>[<DISP>])
Translates a point <PT> from one coordinate system to another.
(type <ITEM>)
Returns the type of <ITEM>.
(untrace <FUNCTIONS>...)
Clears the trace floag for <FUNCTIONS>.
(ver)
Returns AutoLISP version number.
(vports)
Returns a list of currently active viewports.
(while <TESTEXPR><EXPR>)
Evaluates <TESTEXPR> and if not nill executes <EXPR>.
(write-char <NUM> [<FILENAME>])
Writes the character represented by the ASCII value of
<NUM> to the screen or to <FILENAME>.
(write-line <STRING> [<FILENAME>])
Writes <STRING> to the screen or to <FILENAME>.
(vmon)
Enables AutoLISP virtual function pager.
(zerop <ITEM>)
Returns T if <ITEM> evaluates to zero.
(*error* <STRING>)
User-definable error function.