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LibreLogo Toolbar

From LibreOffice Help

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HU IT JA KM KO NB NL OM PL PT PT-BR RU SL SV

TR VI ZH-CN ZH-TW

LibreLogo is a simple, localized, Logo-like programming environment with turtle

vector graphics for teaching of computing (programming and word processing),

DTP and graphic design. See http://www.numbertext.org/logo/librelogo.pdf.

Contents

1 LibreLogo toolbar

2 Turtle moving icons

3 Start Logo program

4 Home

5 Clear screen

6 Program editor/Syntax highlighting/Translating

7 Command line

8 Graphical user interface of basic turtle settings

9 Program editing

10 LibreLogo programming language

10.1 Differences from the Logo programming language

10.2 Other features of LibreLogo

11 LibreLogo commands

11.1 Basic syntax

11.1.1 Case sensitivity

11.1.2 Program lines

11.1.3 Comments

11.1.4 Break program lines to multiple paragraphs

11.2 Turtle moving

11.2.1 FORWARD (fd)

11.2.2 BACK (bk)

11.2.3 LEFT (lt)

11.2.4 RIGHT (rt)

11.2.5 PENUP (pu)

11.2.6 PENDOWN (pd)

11.2.7 POSITION (pos)

LibreLogo Toolbar - LibreOffice Help https://help.libreoffice.org/index.php?title=Writer/LibreL...

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11.2.8 HEADING (seth)

11.3 Other turtle commands

11.3.1 HIDETURTLE (ht)

11.3.2 SHOWTURTLE (st)

11.3.3 HOME

11.3.4 CLEARSCREEN (cs)

11.3.5 FILL and CLOSE

11.4 Pen settings

11.4.1 PENSIZE (ps)

11.4.2 PENCOLOR/PENCOLOUR (pc)

11.4.3 PENTRANSPARENCY

11.4.4 PENCAP/LINECAP

11.4.5 PENJOINT/LINEJOINT

11.4.6 PENSTYLE

11.5 Fill settings

11.5.1 FILLCOLOR/FILLCOLOUR (fc)

11.5.2 FILLTRANSPARENCY

11.5.3 FILLSTYLE

11.6 Drawing objects

11.6.1 CIRCLE

11.6.2 ELLIPSE

11.6.3 SQUARE

11.6.4 RECTANGLE

11.6.5 POINT

11.6.6 LABEL

11.6.7 TEXT

11.7 Font settings

11.7.1 FONTCOLOR/FONTCOLOUR

11.7.2 FONTFAMILY

11.7.3 FONTSIZE

11.7.4 FONTWEIGHT

11.7.5 FONTSTYLE

11.8 PICTURE (pic)

11.8.1 Shape grouping

11.8.2 Starting new line shapes

11.8.3 Saving SVG images

11.8.4 Saving SVG/SMIL animations (drawings with SLEEP

commands)

11.8.5 Consistency at the left border

11.9 Loops

11.9.1 REPEAT

11.9.2 REPCOUNT

11.9.3 FOR IN


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11.9.4 WHILE

11.9.5 BREAK

11.9.6 CONTINUE

11.10 Conditions

11.10.1 IF

11.10.2 AND, OR, NOT

11.11 Subroutines

11.11.1 TO, END

11.11.2 OUTPUT

11.11.3 STOP

11.12 Default variables

11.12.1 ANY

11.12.2 TRUE

11.12.3 FALSE

11.12.4 PAGESIZE

11.12.5 PI/π11.13 Input/Output

11.13.1 PRINT

11.13.2 INPUT

11.14 SLEEP

11.15 GLOBAL

11.16 Functions

11.16.1 RANDOM

11.16.2 INT

11.16.3 FLOAT

11.16.4 STR

11.16.5 SQRT

11.16.6 SIN

11.16.7 COS

11.16.8 LOG10

11.16.9 ROUND

11.16.10 ABS

11.16.11 COUNT

11.16.12 SET

11.16.13 RANGE

11.16.14 LIST

11.16.15 TUPLE

11.16.16 SORTED

11.16.17 SUB

11.16.18 SEARCH

11.16.19 FINDALL

11.16.20 MIN

11.16.21 MAX


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11.17 Color constants

LibreLogo toolbar

The LibreLogo toolbar (View » Toolbars » Logo) contains turtle moving, program

start, stop, home, clear screen, program editor/syntax highlighting/translating icons

and an input bar (command line).

Turtle moving icons

They are equivalents of the Logo commands “FORWARD 10”, “BACK 10”, “LEFT

15”, “RIGHT 15”. Clicking on one of the icons will also focus the turtle shape

scrolling the page to its position.

Start Logo program

Click on the icon “Start Logo program” to execute the text (or only the selected) text

of the Writer document as a LibreLogo program. In an empty document an example

program will be inserted and executed.

Click on the icon “Stop” to stop the program execution.

Home

Click on the icon “Home” to reset the position and settings of the turtle.

Clear screen

Click on the icon “Clear screen” to remove the drawing objects of the document.

Program editor/Syntax highlighting/Translating

The “magic wand” icon sets 2-page layout for program editing, expands and

converts to uppercase the abbreviated, lowercase Logo commands in the Writer

document. Change the language of the document (Tools » Options » Language

Settings » Languages » Western) and click on this icon to translate the Logo program

to the selected language.

Command line


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Hit Enter in the command line to execute its content. To stop the program use the

icon “Stop”.

Hold down the Enter to repeat the command line, for example, on the following

command sequence:

FORWARD 200 LEFT 89

To reset the command line click triple in it or press Ctrl-A to select the previous

commands, and type the new commands.

Graphical user interface of basic turtle settings

Turtle shape of LibreLogo is a normal fixed size drawing object. You can positionate

and rotate it on standard way, too, using the mouse and the Rotate icon of the

Drawing Object Properties toolbar. Modify Line Width, Line Color and Area Color

settings of the turtle shape to set PENSIZE, PENCOLOR and FILLCOLOR attributes

of LibreLogo.

Program editing

LibreLogo drawings and programs use the same Writer document. The LibreLogo

canvas is on the first page of the Writer document. You can insert a page break

before the LibreLogo programs and set page zoom using the “magic wand” icon of

the Logo toolbar, also change the font size for a comfortable 2-page layout for

LibreLogo programming: left (first) page is the canvas, right (second) page is the

LibreLogo program editor.

LibreLogo programming language

LibreLogo is an easily localizable, Logo-like programming language, localized in

several languages by LibreOffice native language communities. It is back-compatible

with the older Logo systems in the case of the simple Logo programs used in

education, eg.

TO triangle :size

REPEAT 3 [

FORWARD :size

LEFT 120

]

END

triangle 10 triangle 100 triangle 200


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Differences from the Logo programming language

List members are comma separated: POSITION [0, 0]

Program blocks and lists are different

Program blocks need space or new line at parenthesization: REPEAT 10 [

FORWARD 10 LEFT 36 ]

Lists need close parenthesization: POSITION [0, 0], and not POSITION [ 0, 0 ]

1-line function declarations are not supported (TO and END need new lines).

Other features of LibreLogo

The colon is optional before the variable names.

TO triangle size

REPEAT 3 [ FORWARD size LEFT 120 ]

END

String notation supports also orthographical and Python syntax.

PRINT "word ; original Logo syntax

PRINT “Arbitrary text.” ; orthography, Writer

PRINT 'Arbitrary text.' ; Python syntax

Python list and string handling

PRINT “text”[2] ; print “x”

PRINT “text”[1:3] ; print “ex”

Python-like FOR loop

Python-like variable declaration:

x = 15

PRINT x

There are no extra query functions:

PRINT FILLCOLOR

p = POSITION

PRINT p

REPEAT 10 [ POSITION ANY POSITION p ]

Alternative parenthesization in function calls

TO star size color

FILLCOLOR color

REPEAT 5 [ LEFT 72 FORWARD size RIGHT 144 FORWARD size ]

FILL

END

star 100 “red”

star (100, “green”)


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star(100, “blue”)

LibreLogo commands

Basic syntax

Case sensitivity

Commands, color constants are case insensitive:

PRINT “Hello, World!”

print “Hello, World, again!”

Variable names are case sensitive:

a = 5

A = 7

PRINT a

PRINT A

Program lines

Lines of a LibreLogo program are paragraphs in the LibreOffice Writer document. A

program line can contain multiple commands:

PRINT “Hello, World!” PRINT “LibreLogo”

Comments

Lines or line parts are comments from a semicolon to the end of the line

(paragraph):

; some comments

PRINT 5 * 5 ; some comments

Break program lines to multiple paragraphs

It’s possible to break a program line for more paragraphs using the character tilde at

the end of the line:

PRINT “This is a very long ” + ~

“warning message”


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Turtle moving

FORWARD (fd)

FORWARD 10 ; move forward 10pt (1pt = 1/72 inch)

FORWARD 10pt ; see above

FORWARD 0.5in ; move forward 0.5 inch (1 inch = 2.54 cm)

FORWARD 1" ; see above

FD 1mm

FD 1cm

BACK (bk)

BACK 10 ; move back 10pt

LEFT (lt)

LEFT 90 ; turn counterclockwise 90 degrees

LEFT 90° ; see above

LT 3h ; see above (clock position)

LT any ; turn to a random position

RIGHT (rt)

RIGHT 90 ; turn clockwise 90 degrees

PENUP (pu)

PENUP ; turtle will move without drawing

PENDOWN (pd)

PENDOWN ; turtle will move with drawing

POSITION (pos)

POSITION [0, 0] ; turn and move to the top-left corner

POSITION PAGESIZE ; turn and move to the bottom-right corner

POSITION [PAGESIZE[0], 0] ; turn and move to the top-right corner

POSITION ANY ; turn and move to a random position

HEADING (seth)


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HEADING 0 ; turn north

HEADING 12h ; see above

HEADING [0, 0] ; turn to the top-left corner

HEADING ANY ; turn to a random direction

Other turtle commands

HIDETURTLE (ht)

HIDETURTLE ; hide turtle (until the showturtle command)

SHOWTURTLE (st)

SHOWTURTLE ; show turtle

HOME

HOME ; reset initial turtle settings and position

CLEARSCREEN (cs)

CLEARSCREEN ; remove drawing objects of the document

FILL and CLOSE

FILL ; close and fill the actual line shape or points

CLOSE ; close the actual line shape or join the actual points

Example: filling a regular triangle:

FORWARD 50 LEFT 120 FORWARD 50 FILL

Example: drawing a regular triangle:

FORWARD 50 LEFT 120 FORWARD 50 CLOSE

Pen settings

PENSIZE (ps)

PENSIZE 100 ; line width is 100 points

PENSIZE ANY ; equivalent of PENSIZE RANDOM 10


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PENCOLOR/PENCOLOUR (pc)

PENCOLOR “red” ; set red pen color (by color name, see color constants)

PENCOLOR [255, 255, 0] ; set yellow color (RGB list)

PENCOLOR 0xffff00 ; set yellow color (hexa code)

PENCOLOR 0 ; set black color (0x000000)

PENCOLOR ANY ; random color

PENCOLOR [5] ; set red color (by color identifier, see color constants)

PENCOLOR “invisible” ; invisible pen color for shapes without visible outline

PENCOLOR “~red” ; set random red color

PENTRANSPARENCY

PENTRANSPARENCY 80 ; set the transparency of the actual pen color to 80%

PENCAP/LINECAP

PENCAP “none” ; without extra line end (default)

PENCAP “round” ; rounded line end

PENCAP “square” ; square line end

PENJOINT/LINEJOINT

PENJOINT “rounded” ; rounded line joint (default)

PENJOINT “miter” ; sharp line joint

PENJOINT “bevel” ; bevel line joint

PENJOINT “none” ; without line joint

PENSTYLE

PENSTYLE “solid” ; solid line (default)

PENSTYLE “dotted” ; dotted line

PENSTYLE “dashed” ; dashed line

; custom dot–dash pattern specified by a list with the following arguments:

; – number of the neighbouring dots

; – length of a dot

; – number of the neighbouring dashes

; – length of a dash

; – distance of the dots/dashes

; – type (optional):

; 0 = dots are rectangles (default)


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; 2 = dots are squares (lengths and distances are relative to the pensize)

PENSTYLE [3, 1mm, 2, 4mm, 2mm, 2] ; ...––...––...––

Fill settings

FILLCOLOR/FILLCOLOUR (fc)

FILLCOLOR “blue” ; fill with blue color, see also PENCOLOR

FILLCOLOR “invisible” CIRCLE 10 ; unfilled circle

FILLCOLOR [“blue”, “red”] ; gradient between red and blue

FILLCOLOR [[255, 255, 255], [255, 128, 0]] ; between white and orange

FILLCOLOR [“blue”, “red”, 1, 0, 0] ; set axial gradient (with the required rotation and

border settings), possible values: 0-5 = linear, axial, radial, elliptical, square and

rectangle gradients

FILLCOLOR [“red”, “blue”, 0, 90, 20] ; linear with 20% border, rotated with 90 degrees from

the actual heading of the turtle

FILLCOLOR [“red”, “blue”, 0, 90, 20, 0, 0, 200, 50] ; from 200% to 50% intensity

FILLCOLOR [ANY, ANY, 2, 0, 0, 50, 50] ; radial gradient with random colors and 50-50%

horizontal and vertical positions of the center

FILLTRANSPARENCY

FILLTRANSPARENCY 80 ; set the transparency of the actual fill color to 80%

FILLTRANSPARENCY [80] ; set linear transparency gradient from 80% to 0%

FILLTRANSPARENCY [80, 20] ; set linear transparency gradient from 80% to 20%

FILLTRANSPARENCY [80, 20, 1, 90] ; set axial transparency gradient rotated with 90 degrees

from the actual heading of the turtle

FILLTRANSPARENCY [80, 20, 2, 0, 20, 50, 50] ; set radial transparency gradient from outer

80% to inner 20% transparency with 20% border and with 50-50% horizontal and vertical

positions of the center

FILLSTYLE

FILLSTYLE 0 ; fill without hatches (default)

FILLSTYLE 1 ; black single hatches (horizontal)

FILLSTYLE 2 ; black single hatches (45 degrees)

FILLSTYLE 3 ; black single hatches (-45 degrees)

FILLSTYLE 4 ; black single hatches (vertical)

FILLSTYLE 5 ; red crossed hatches (45 degrees)

FILLSTYLE 6 ; red crossed hatches (0 degrees)


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FILLSTYLE 7 ; blue crossed hatches (45 degrees)

FILLSTYLE 8 ; blue crossed hatches (0 degrees)

FILLSTYLE 9 ; blue triple crossed

FILLSTYLE 10 ; black wide single hatches (45 degrees)

; custom hatches specified by a list with the following arguments:

; – style (1 = single, 2 = double, 3 = triple hatching)

; – color

; – distance

; – degree

FILLSTYLE [2, “green”, 3pt, 15°] ; green crossed hatches (15 degrees)

Drawing objects

CIRCLE

CIRCLE 100 ; draw a circle shape (diameter = 100pt)

ELLIPSE

ELLIPSE [50, 100] ; draw an ellipse with 50 and 100 diameters

ELLIPSE [50, 100, 2h, 12h] ; draw an elliptical sector (from 2h clock position to 12h)

ELLIPSE [50, 100, 2h, 12h, 2] ; draw an elliptical segment

ELLIPSE [50, 100, 2h, 12h, 3] ; draw an elliptical arc

SQUARE

SQUARE 100 ; draw a square shape (size = 100pt)

RECTANGLE

RECTANGLE [50, 100] ; draw a rectangle shape (50×100pt)

RECTANGLE [50, 100, 10] ; draw a rectangle with rounded corners

POINT

POINT ; draw a point with size and color of the pen

CLOSE can join the last points, FILL can fill the shape defined by points. For

example, it’s easy to draw a “flat” star starting from its center:


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PENUP

REPEAT 5 [

FORWARD 80

POINT

BACK 80

RIGHT 36

FORWARD 50

POINT

BACK 50

RIGHT 120

] FILL

LABEL

LABEL “text” ; print text in the turtle position

LABEL 'text' ; see above

LABEL "text ; see above (only for single words)

TEXT

CIRCLE 10 TEXT “text” ; set text of the actual drawing object

Font settings

FONTCOLOR/FONTCOLOUR

FONTCOLOR “green” ; set font color

FONTFAMILY

FONTFAMILY “Linux Libertine G” ; set font (family)

FONTFAMILY “Linux Libertine G:smcp=1” ; set also font feature (small caps)

FONTFAMILY “Linux Libertine G:smcp=1&onum=1” ; small caps + old figures

FONTSIZE

FONTSIZE 12 ; set 12pt

FONTWEIGHT

FONTWEIGHT “bold” ; set bold font

FONTWEIGHT “normal” ; set normal weight


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FONTSTYLE

FONTSTYLE “italic” ; set italic variant

FONTSTYLE “normal” ; set normal variant

PICTURE (pic)

PICTURE is for

shape grouping;

starting new line shapes;

saving SVG images and SVG/SMIL animations;

keeping the consistency of positions and line shapes at the left border.

Shape grouping

; PICTURE [ LibreLogo_commands ]

PICTURE [ FORWARD 100 CIRCLE 100 ] ; tree-like grouped shape

See also “Group” in LibreOffice Writer Help.

TO tree location

PENUP POSITION location HEADING 0 PENDOWN

PICTURE [ FORWARD 100 CIRCLE 100 ] ; tree-like grouped shape

END

PICTURE [ tree [30, 50] tree [100, 50] ] ; grouped shapes in a grouped shape

Starting new line shapes

PICTURE ; start a new line shape

FORWARD 10 PICTURE FORWARD 10 ; two line shapes

Saving SVG images

PICTURE “example.svg” [ CIRCLE 5 ] ; save the picture as an SVG image file in the user

folder

PICTURE “Desktop/example.svg” [ FORWARD 100 CIRCLE 5 ] ; as above, with a relative path

PICTURE “/home/user/example.svg” [ CIRCLE 5 ] ; absolute path for Unix/Linux

PICTURE “C:\example.svg” [ CIRCLE 5 ] ; absolute path for Windows

Saving SVG/SMIL animations (drawings with SLEEP commands)


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PICTURE “animation.svg” [ CIRCLE 5 SLEEP 1000 CIRCLE 99 ] ; save as an SVG/SMIL animation

(see also SLEEP)

PICTURE “animation2.svg” [ CIRCLE 5 SLEEP 1000 CIRCLE 99 SLEEP 2000 ] ; as above, but using

SLEEP after the last object will result looping: after 2 seconds the SVG animation restarts

in SMIL-conformant browsers

Consistency at the left border

Use picture to keep the consistency of positions and line shapes at the left border of

Writer:

PICTURE [ CIRCLE 20 POSITION [-100, 100] CIRCLE 20 ]

Loops

REPEAT

; REPEAT number [ commands ]

REPEAT 10 [ FORWARD 10 LEFT 45 CIRCLE 10 ] ; repeat 10 times

; number is optional

REPEAT [ POSITION ANY ] ; endless loop

REPCOUNT

Loop variable (also in the FOR and WHILE loops).

REPEAT 100 [ FORWARD REPCOUNT LEFT 90 ]

FOR IN

Loop for the list elements:

FOR i IN [1, 5, 7, 9, 11] [

FORWARD i

LEFT 90

]

Loop for the characters of a character sequence:

FOR i IN “text” [


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LABEL i

FORWARD 10

]

WHILE

WHILE TRUE [ POSITION ANY ] ; endless loop

WHILE REPCOUNT <= 10 [ FORWARD 50 LEFT 36 ] ; as REPEAT 10 [ ... ]

BREAK

Stop the loop.

REPEAT [ ; endless loop

POSITION ANY

IF REPCOUNT = 100 [ BREAK ] ; equivalent of the REPEAT 100 [ ... ]

]

CONTINUE

Jump into the next iteration of the loop.

REPEAT 100 [

POSITION ANY

IF REPCOUNT % 2 = 0 [ CONTINUE ]

CIRCLE 10 ; draw circles on every 2nd positions

]

Conditions

IF

; IF condition [ true block ]

; IF condition [ true block ] [ false block ]

IF a < 10 [ PRINT “Small” ]

IF a < 10 [ PRINT “Small” ] [ PRINT “Big” ]

AND, OR, NOT

Logical operators.

IF a < 10 AND NOT a = 5 [ PRINT “0, 1, 2, 3, 4, 6, 7, 8 or 9” ]


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IF a < 10 AND a != 5 [ PRINT “0, 1, 2, 3, 4, 6, 7, 8 or 9” ] ; as above

Subroutines

TO, END

New word (or procedure).

TO triangle

REPEAT [ FORWARD 100 RIGHT 120 ] FILL

END

REPEAT 10 [ triangle PENUP POSITION ANY PENDOWN ]

OUTPUT

Return value of the function.

TO randomletter

OUTPUT RANDOM “qwertzuiopasdfghjklyxcvbnm”

END

PRINT randomletter + randomletter + randomletter ; print 3-letter random character sequence

STOP

Return from the procedure.

TO example number

IF number < 0 [ STOP ]

PRINT SQRT number ; print square root

]

example 100

example -1 ; without output and error

example 25

Default variables

ANY

Default random value of colors, etc.


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PENCOLOR ANY ; random pen color

TRUE

Logical value.

WHILE TRUE [ POSITION ANY ] ; endless loop

PRINT TRUE ; print true

FALSE

Logical value.

WHILE NOT FALSE [ POSITION ANY ] ; endless loop

PRINT FALSE ; print false

PAGESIZE

PRINT PAGESIZE ; print list of the page sizes in points, eg. [595.30, 841.89]

PI/π

PRINT PI ; print 3.14159265359

Input/Output

PRINT

PRINT “text” ; print “text” in a dialog box

PRINT 5 + 10 ; print 15

INPUT

PRINT INPUT “Input value?” ; ask and print a string by a query dialog box

PRINT FLOAT (INPUT “First number?”) + FLOAT (INPUT “Second number?”) ; simple calculator

SLEEP

SLEEP 1000 ; wait for 1000 ms (1 sec)

GLOBAL


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Set global variables used in procedures.

GLOBAL about

about = “LibreLogo”

TO example

PRINT about

GLOBAL about ; when we want to add a new value

about = “new value for the global variable”

END

example

PRINT about

Functions

RANDOM

PRINT RANDOM 100 ; random float number (0 <= x < 100)

PRINT RANDOM “text” ; random letter of the “text”

PRINT RANDOM [1, 2] ; random list element (1 or 2)

INT

PRINT INT 3.8 ; print 3 (integer part of 3.8)

PRINT INT RANDOM 100 ; random integer number (0 <= x < 100)

PRINT INT “7” ; convert the string parameter to integer

FLOAT

; convert the string parameter to float number

PRINT 2 * FLOAT “5.5” ; print 11.0

STR

; convert the number parameter to string

PRINT “Result: ” + STR 5 ; print “Result: 5”

PRINT 10 * STR 5 ; print 5555555555

SQRT

PRINT SQRT 100 ; print 10, square root of 100


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SIN

PRINT SIN 90 * PI/180 ; print 1.0 (sinus of 90° in radians)

COS

PRINT COS 0 * PI/180 ; print 1.0 (cosinus of 0° in radians)

LOG10

PRINT LOG10 100 ; print 2.0 (common logarithm of 100)

ROUND

PRINT ROUND 3.8 ; print 4 (rounding 3.8)

PRINT ROUND RANDOM 100 ; random integer number (0 <= x <= 100)

ABS

PRINT ABS -10 ; print 10, absolute value of -10

COUNT

PRINT COUNT “text” ; print 4, character count of “text”

PRINT COUNT [1, 2, 3] ; print 3, size of the list

SET

; Convert list to Python set

PRINT SET [4, 5, 6, 6] ; print {4, 5, 6}

PRINT SET [4, 5, 6, 6] | SET [4, 1, 9] ; print {1, 4, 5, 6, 9}, union

PRINT SET [4, 5, 6, 6] & SET [4, 1, 9] ; print {4}, intersection

PRINT SET ([4, 5, 6, 6]) - SET [4, 1, 9] ; print {5, 6}, difference

PRINT SET [4, 5, 6, 6] ^ SET [4, 1, 9] ; print {1, 5, 6, 9}, symmetric difference

RANGE

; Python-like list generation

PRINT RANGE 10 ; print [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

PRINT RANGE 3 10 ; print [3, 4, 5, 6, 7, 8, 9]

PRINT RANGE 3 10 3 ; print [3, 6, 9]


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FOR i IN RANGE 10 50 10 [ ; loop for [10, 20, 30, 40]

FORWARD i

LEFT 90

]

LIST

; remove the repeating elements of a list using set and list conversion

PRINT LIST (SET [1, 3, 5, 5, 2, 1]) ; print [1, 3, 5, 2]

TUPLE

Conversion to Python tuple (non-modifiable list)

PRINT TUPLE [4, 5]

SORTED

It returns with a sorted list.

PRINT SORTED [5, 1, 3, 4] ; print [1, 3, 4, 5]

SUB

Substitute character sequences using regex (regular expression) patterns.

PRINT SUB (“t”, “T”, “text”) ; print “Text”, replacing “t” with “T”

PRINT SUB (“(.)”, “\\1\\1”, “text”) ; print “tteexxtt”, doubling every characters

SEARCH

Search character sequences patterns using regex patterns.

IF SEARCH (“\w”, word) [ PRINT “Letter in the word.” ]

FINDALL

Find all character sequences in the input string matching the given regex pattern.

PRINT FINDALL(“\w+”, “Dogs, cats.”) ; print [“Dogs”, “cats”], the list of the words.

MIN

PRINT MIN [1, 2, 3] ; print 1, the lowest element of the list


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MAX

PRINT MAX [1, 2, 3] ; print 3, the greatest element of the list

Color constants

PENCOLOR “SILVER” ; set by name

PENCOLOR [1] ; set by identifiers

PENCOLOR “~SILVER” ; random silver color


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Identifier Name

0 BLACK

1 SILVER

2 GRAY/GREY

3 WHITE

4 MAROON

5 RED

6 PURPLE

7 FUCHSIA/MAGENTA

8 GREEN

9 LIME

10 OLIVE

11 YELLOW

12 NAVY

13 BLUE

14 TEAL

15 AQUA

16 PINK

17 TOMATO

18 ORANGE

19 GOLD

20 VIOLET

21 SKYBLUE

22 CHOCOLATE

23 BROWN

24 INVISIBLE

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/LibreLogo_Toolbar&oldid=1306377"

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23 of 24 13/06/2016 18:24

EN

This page was last modified 06:47:24, 2015-09-28 by LibreOffice Help user

WikiSysop.

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unless otherwise specified, originally based on OpenOffice.org help.

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