selfGDL

https://www.selfgdl.de/
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selfGDL is a comprehensive command reference and compendium for Geometric Description Language (GDL)...
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### PLANE_ Polygon Examples

Source: https://www.selfgdl.de/3d-basic/planare/plane_

Examples demonstrating the creation of a 3-vertex and a 4-vertex polygon surface using the PLANE_ command.

```GDL
PLANE_ 3,  
0, 0.2, 0.4, 1,  
1, 0.0, 0.6, 0,  
0, 0.6, 1.0, 1
```

```GDL
PLANE_ 4,  
0.0, 0.2, 0.4, 1,  
1.0, 0.0, 0.6, 0,  
0.5, 0.3, 0.8, 1,  
0.0, 0.6, 1.0, 1
```

--------------------------------

### UI_SLIDER Implementation Example

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_slider

Example showing the parameter script range definition and the corresponding UI script slider command.

```GDL
Parameter-Script:  VALUES "schieber" RANGE[0, 10]   
UI-Script:  UI_SLIDER "Schieber", 30, 210, 200, 20, 10, 1
```

--------------------------------

### UI_SLIDER{2} Implementation Example

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_slider2

Example showing the required parameter range definition in the Parameter-Script and the UI_SLIDER{2} command usage in the UI-Script.

```GDL
Parameter-Script:  VALUES "schieber" RANGE[0, 10]   
UI-Script:  UI_SLIDER{2} Schieber[1][1], 30, 210, 200, 20, 10, 1
```

--------------------------------

### UI_PICT_BUTTON Syntax Examples

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_pict_button

Examples demonstrating the usage of UI_BUTTON with different types including navigation, web links, and function triggers.

```GDL
UI_BUTTON UI_NEXT, "Seite 3", 180,238,126,24,1  
UI_BUTTON UI_PREV, "Seite 1", 3,238,126,24,2  
UI_BUTTON UI_LINK, "unsere Website", 3,238,126,24,3,"https://www.selfgdl.de"  
UI_BUTTON UI_FUNCTION, "Seite 4", 170,150,50,20,4
```

```GDL
UI_BUTTON UI_LINK, "Ein GDL-Objekt", 3,238,126,24,3,"C:\ArchiCAD\self.gsm"
```

--------------------------------

### UI_COLORPICKER{2} Usage Example

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_colorpicker2

Example showing the implementation of the color picker with array parameters.

```ArchiCAD GDL
UI_COLORPICKER{2} pamo[1][1], pamo[1][2], pamo[1][3], 30, 200, 50,50
```

--------------------------------

### Symbol Line Implementation Example

Source: https://www.selfgdl.de/attribute/linien/define_symbol_line

Example showing the main object definition and the corresponding macro object for a symbol line.

```GDL
! HAUPTOBJEKT  
! Zeichnungssymbol, platzierbar  
! Grundwerte: a=0.04; b=0.1  
  
! Abmessungen der Schlinge  
a=0.04 ! Breite (=Durchmesser)  
b=0.10 ! Höhe  
  
faktor=1000/GLOB_SCALE  
DEFINE SYMBOL_LINE "Symbollinie GDL" a*faktor, 0, "selfgdl_SCHLINGE.gsm" PARAMETERS a=a, b=b  
  
LINE_TYPE 1  
LINE2 0,0, a,0  
  
LINE_TYPE "Symbollinie GDL"  
LINE2 0,b, a,b
```

```GDL
! MAKROOBJEKT  
! Zeichnungssymbol, nicht platzierbar  
! Grundwerte: a=0.04; b=0.1  
  
! Grundwerte  
t=a/2 ! Radius der Schlinge  
d=b-a ! Höhe des Zwischenbereichs  
  
! siehe Kreisbogenversatz  
s=sqr((t/2)^2+(d/2)^2)/2  
alpha=atn(d/t)  
w=2*(90-alpha)  
r=s/cos(alpha)  
  
! Schleifenbögen links unten  
ARC2 0,t, t, 270,360  
ARC2 t-r,t, r, 0,w  
  
! Schleifenbögen oben  
ARC2 r, b-t, r, 180, 180+w  
ARC2 t, b-t, t, 0, 180  
ARC2 a-r,b-t, r, 360-w,360  
  
! Schleifenbögen rechts unten  
ARC2 a, t, t, 180,270  
ARC2 t+r,t, r, 180-w,180  
  
! Ober- / Unterlinie  
POLY2_ 4,1, 0,0,1, a,0,0, a,b,1, 0,b,0
```

--------------------------------

### POLY2_ Usage Examples

Source: https://www.selfgdl.de/2d-elemente-2/polygone/poly2_

Examples demonstrating the definition of polygons with various masking and status configurations.

```GDL
POLY2_ 5,1+2+4,
0,0,0, 1,0,1, 1,1,1, 0.5,1.7,1, 0,1,1
```

```GDL
POLY2_ 11,1+2,
0,0,0, 1,0,1, 1,1,1, 0.5,1.7,1, 0,1,1, 0,0,-1,
0.2,0.2,0, 0.8,0.2,1, 0.8,1,1, 0.2,1,1, 0.2,0.2,-1
```

```GDL
POLY2_ 8,1+2,
0,0,0, 1,0,1, 1,1,1, 0.5,1.7,1, 0,1,1, 0,0,-1,
0.5,0.5,901, 0.4,360,4001
```

--------------------------------

### CUTPLANE Usage Example

Source: https://www.selfgdl.de/3d-basic/schnittbefehle/cutplane

Example demonstrating the use of multiple CUTPLANE commands to create a quarter sphere.

```GDL
CUTPLANE
CUTPLANE 90
CUTPLANE 0,1,1,0
SPHERE 1
CUTEND
CUTEND
CUTEND
```

--------------------------------

### Example Usage of FLOOR_PLAN_OPTION

Source: https://www.selfgdl.de/diverses/umgebung/request/FLOOR_PLAN_OPTION

Demonstrates how to interpret the returned value to determine the display mode.

```GDL
n = REQUEST("FLOOR_PLAN_OPTION", "", anzeige2D)

IF anzeige2D = 0 THEN abbild_2D="Grundriss"
IF anzeige2D = 1 THEN abbild_2D="Deckenplan"
```

--------------------------------

### POLY_ Command Example

Source: https://www.selfgdl.de/3d-basic/planare/poly_

A basic example demonstrating the definition of a polygon with six points, including specific status codes for edge visibility and curved transitions.

```GDL
POLY_ 6,  
0,0,1,  
1,0,1,  
1,1,1,  
0.5,1.7,1, ! Spitze  
-1,0,801, ! Tangente nach links  
0,1,1001 ! Kreisbogen tangentialer Übergang
```

--------------------------------

### Complete Material Definition Example

Source: https://www.selfgdl.de/attribute/materialien/define_material

A full example demonstrating the definition of a fill, a texture, and a custom material, followed by its application to geometry.

```GDL
! Abmessungen Demoblock  
  
a = 1  
b = 0.9  
c = 0.6  
  
! Definition der Schraffur  
DEFINE FILLA "Rechteck" 1+2+4+8+16+32,1+32,1+32,1+32,1+2+4+8+16+32,0,0,0,  
! skalierung,winkel,n  
a/1, b/0.6, 0, 4,  
! Linie 1 - frequenz,richtung,verschiebungX,verschiebungY,m  
0.3,0, 0.00, 0.00, 0.00, 2,  
0.20, 0.20,  
! Linie 2 - frequenz,richtung,verschiebungX,verschiebungY,m  
0.4,0, 90.00, 0.00, 0.00, 2,  
0.15, 0.15,  
! Linie 3 - frequenz,richtung,verschiebungX,verschiebungY,m  
0.3,0, 0.00, 0.00, 0.15, 2,  
0.20, 0.20,  
! Linie 4 - frequenz,richtung,verschiebungX,verschiebungY,m  
0.4,0, 90.00, 0.20, 0.00, 2,  
0.15, 0.15  
  
! Definition der Textur  
DEFINE TEXTURE "Bild" "textur.jpg", 0.2, 0.15, 0, 0  
  
! Definition des Materials  
  
! surface color  
oberflaeche_rot = 0.8  
oberflaeche_gruen = 0.2  
oberflaeche_blau = 0.2  
  
streulicht=0.2 ! ambient  
diffus = 0.1 ! diffuse  
spiegelung= 0.1 ! specular  
transparenz = 0 ! transparent  
  
glanzlicht = 40 ! shining  
abminderung_trans = 2 ! transparency attenuation  
abstrahlung = 32.75 ! emission attenuation  
  
! specular color  
spiegelung_rot = 0.6  
spiegelung_gruen = 0.6  
spiegelung_blau = 0.6  
  
! emission color  
abstrahlung_rot = 0.1  
abstrahlung_gruen = 0.1  
abstrahlung_blau = 0.1  
  
schraffurindex = IND(FILL,"Rechteck") ! fill index,  
schraffurstift = 1 ! color index  
texturindex = IND(TEXTURE,"Bild") ! texture index  
  
DEFINE MATERIAL "individuelles_Material" 20,  
oberflaeche_rot, oberflaeche_gruen, oberflaeche_blau,  
streulicht, diffus, spiegelung, transparenz,  
glanzlicht, abminderung_trans,  
spiegelung_rot, spiegelung_gruen, spiegelung_blau,  
abstrahlung_rot, abstrahlung_gruen, abstrahlung_blau,  
abstrahlung,  
schraffurindex, schraffurstift, texturindex  
  
! Materialattribut auf neues Material setzen  
MATERIAL "individuelles_Material"  
  
! Darstellung  
BLOCK a,b,c  
  
ADD a*2,b/2,a/2  
  
SPHERE a/2
```

--------------------------------

### DEFINE_STYLE{2} Usage Examples

Source: https://www.selfgdl.de/attribute/text/define_style2

Examples demonstrating the definition of various text styles using literal strings, variables, and style bitmasks.

```GDL
Beispiel 1:  
Zeichensatz="Courier New"  
sh=2.5  
  
DEFINE STYLE{2} "TypA" "Arial", sh, 0  
DEFINE STYLE{2} "TypN" Zeichensatz, sh, 0  
DEFINE STYLE{2} "TypF" "Courier New", 2.5, 1  
DEFINE STYLE{2} "TypH" Zeichensatz, sh, 32
```

```GDL
Beispiel 2:  
TypA="TypB"  
DEFINE STYLE{2} TypA "Arial", 2.5, 0  
SET Style "TypB"
```

--------------------------------

### UI_INFIELD{3} Examples

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_infield3

Examples demonstrating the use of UI_INFIELD{3} for creating buttons with text, buttons with images, and checkboxes.

```GDL
UI_INFIELD{3} "gs_min_space", 5, 4, 135, 20,  
5, "", 2,  
1, 20, 20, 20, 20,  
0, "Minimal Space off", 0,  
1, "Minimal Space on", 1
```

```GDL
UI_INFIELD{3} "gs_min_space", 5, 34, 50, 25,  
6, "mat_high", 2,  
1, 50, 25, 50, 25,  
1, "", 0,  
2, "", 1
```

```GDL
UI_INFIELD{3} "gs_min_space", 5, 64, 135, 20,  
7, "", 2,  
1, 20, 20, 20, 20,  
0, "Minimal Space off", 0,  
1, "Minimal Space on", 1
```

--------------------------------

### Define Migration Subroutine IDs

Source: https://www.selfgdl.de/non-geo-scripte/vorw-migr-script

Defines the start and end GUIDs for the migration step.

```GDL
_startID    = "5DF5E047-3F56-0344-A11A-90CB432C7D69"

_endID      = "EB59CE9E-7EBE-E945-BFCC-8B7250BA62AF"
```

--------------------------------

### OPEN Command Examples

Source: https://www.selfgdl.de/addons/data-io/open

Various ways to open data files using different modes and location strategies.

```GDL
ch=OPEN("DATA","wimo_preise_AC.txt","MODE=RO, SEPARATOR=':'")
```

```GDL
ch=OPEN("DATA","wimo_preise.tpxt","MODE=RO, SEPARATOR=':', DIALOG")
```

```GDL
ch=OPEN("DATA","wimo_preise.txt","MODE=RO, SEPARATOR=':', LIBRARY")
```

```GDL
ch=OPEN("DATA","D:2005GDLWimoObjektewimo.lib wimo_preise.txt", "MODE=RO, SEPARATOR=':', FULLPATH")
```

--------------------------------

### Define LIGHT parameters

Source: https://www.selfgdl.de/3d-basic/diverse/light

Example configuration for a light object showing parameter assignment and the LIGHT command structure.

```text
abnahme1=1  
abnahme1=0.5  
  
LIGHT 1,1,1, 0,  
0.90, 1.5, 20.0, abnahme1,  
0.50, 5.75, abnahme2
```

--------------------------------

### Using SETMIGRATIONGUID in a migration script

Source: https://www.selfgdl.de/non-geo-scripte/vorw-migr-script/setmigrationguid

Example demonstrating how to conditionally set the migration GUID based on the current object's FROM_GUID.

```GDL
actualGUID = FROM_GUID  
newGUID = "C9E90C60-967E-47D9-8850-7EB5CA528CE7"  
  
migration = (actualGUID = "E5F8DD6B-D33B-4E43-8AF7-8E9E7EFBE539")  
  
if migration then  
radius=durchmesser/2  
actualGUID = newGUID  
ENDIF  
  
SETMIGRATIONGUID actualGUID
```

--------------------------------

### Retrieve Green Component of a Pen

Source: https://www.selfgdl.de/diverses/umgebung/req/green_of_pen

Example usage of the REQ function to get the green value of pen 75 and print the result.

```GDL
Stift_gruen = REQ("Green_of_pen 75")
PRINT Stift_gruen
```

--------------------------------

### SHADOW Command Usage Example

Source: https://www.selfgdl.de/attribute/allgemein/shadow

Demonstrates how to toggle shadow settings for different blocks within a script.

```GDL
SHADOW ON  
BLOCK 1, 1, 1  
ADDY 1.5  
SHADOW AUTO, OFF  
BLOCK 1, 1, 2  
DEL 1
```

--------------------------------

### Retrieve Material Green Component

Source: https://www.selfgdl.de/diverses/umgebung/req/green_of_material

Example usage of the REQ function to get the green value of a material named 'Beton' and print the result.

```GDL
Mat_gruen = REQ("Green_of_material Beton")
PRINT Mat_gruen
```

--------------------------------

### Example usage of BLOCK

Source: https://www.selfgdl.de/3d-elemente/grundkoerper/block

Example of defining a cuboid with specific variables A, B, and zzyzx.

```3D-Script
BLOCK A, B, zzyzx
```

--------------------------------

### Opening a Text File with OPEN

Source: https://www.selfgdl.de/addons/text-io/open-4

Examples demonstrating various ways to open text files using different modes, separators, and path resolution strategies.

```GDL
ch = OPEN("TEXT", "dummy.txt", "MODE=RO, SEPARATOR=':'")
```

```GDL
ch = OPEN("TEXT", "dummy.txt", "MODE=RO, SEPARATOR=':', DIALOG")
```

```GDL
ch = OPEN("TEXT", "dummy.txt", "MODE=RO, SEPARATOR=':', LIBRARY")
```

```GDL
ch = OPEN("TEXT", "D:\GDL\EinPfad\dummy.txt", "MODE=RO, SEPARATOR=':', FULLPATH")
```

--------------------------------

### Initialize Migration GUID

Source: https://www.selfgdl.de/non-geo-scripte/vorw-migr-script

Sets the initial GUID variable for the migration process.

```GDL
actualGUID = FROM_GUID
```

--------------------------------

### UI_COLORPICKER Syntax Example

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_colorpicker

Example usage of the UI_COLORPICKER command with defined position and dimensions.

```ArchiCAD
UI_COLORPICKER "ParameternameRot", "ParameternameGruen", "ParameternameBlau", 30, 150, 50,50
```

--------------------------------

### Writing Data to a File with OUTPUT

Source: https://www.selfgdl.de/addons/data-io/output

Example demonstrating how to open a data file, write a row using the OUTPUT command, and close the file.

```GDL
titel="Material" : txt1="Holz" : txt2="Glas" : txt3="Eisen"
ch2=OPEN("DATA","data_ausgabetest.txt", "MODE=WA,SEPARATOR=':'")
OUTPUT ch2,titel,1,txt1,txt2,txt3
CLOSE ch2
```

--------------------------------

### REQUEST ANGULAR_LENGTH_DIMENSION Usage Example

Source: https://www.selfgdl.de/diverses/umgebung/request/angular_length_dimension

Example demonstrating the usage of the REQUEST command with a variable.

```GDL
format = ""
zahl = 60.55
dimension="ANGULAR_LENGTH_DIMENSION"
sts = REQUEST (dimension, "",format)
TEXT2 0, 0, dimension + " [" + format +"] " + STR (format, zahl)
```

--------------------------------

### UI_BUTTON UI_LINK Application Launch Example

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_button

Shows how to use UI_LINK to trigger local applications or files based on system registry associations.

```GDL
UI_BUTTON UI_LINK, "Ein GDL-Objekt", 3,238,126,24,3,"C:\ArchiCAD\self.gsm"
```

--------------------------------

### RADIAL_DIMENSION Usage Example

Source: https://www.selfgdl.de/diverses/umgebung/request/radial_dimension

Example demonstrating how to retrieve the format and use it with the STR() function.

```ArchiCAD GDL
format = ""
zahl = 60.55
dimension="RADIAL_DIMENSION"
sts = REQUEST (dimension, "",format)
TEXT2 0, 0, dimension + " [" + format +"] " + STR (format, zahl)
```

--------------------------------

### UI_BUTTON Usage Examples

Source: https://www.selfgdl.de/non-geo-scripte/ui-script/ui_button

Demonstrates the implementation of different button types for navigation, web linking, and function triggering.

```GDL
UI_BUTTON UI_NEXT, "Seite 3", 180,238,126,24,1  
UI_BUTTON UI_PREV, "Seite 1", 3,238,126,24,2  
UI_BUTTON UI_LINK, "unsere Website", 3,238,126,24,3,"https://www.selfgdl.de"  
UI_BUTTON UI_FUNCTION, "Seite 4", 170,150,50,20,4
```

--------------------------------

### Set Migration GUID Command

Source: https://www.selfgdl.de/non-geo-scripte/vorw-migr-script

Registers the current migration GUID within the ArchiCAD environment.

```GDL
! ==============================================================================


 ! Set Migration GUID


 ! ==============================================================================


 setmigrationguid actualGUID
```

--------------------------------

### MUL Command Usage Example

Source: https://www.selfgdl.de/1_ko_trafos/3d_komplex/mul

Demonstrates scaling objects using the MUL command with negative factors to mirror and resize.

```3D-Skript
BLOCK 1,1,1  
MUL -0.2,-2,-0.5  
BLOCK 5,0.5,2
```

--------------------------------

### Library Master Script Implementation

Source: https://www.selfgdl.de/steuerbefehle/umgebung/application_query

Example implementation for populating parameter values with IES and image files within a Master Script.

```GDL
! ==============================================================================
! IES file request
! ==============================================================================

dim stIesFiles[]
bIesFileExist = APPLICATION_QUERY ("LIBRARY_MANAGER", "IES_FILES", stIesFiles)
if bIesFileExist then
values "c4dPhoIESFile" stIesFiles
else
values "c4dPhoIESFile" ""
endif

! ==============================================================================
! Custom 3D picture file request
! ==============================================================================

dim stCustomPicFiles[]
bCustomPicFileExist = APPLICATION_QUERY ("LIBRARY_MANAGER", "USER_IMAGE_FILES", stCustomPicFiles)
if bCustomPicFileExist then
values "gs_picture_name" stCustomPicFiles, CUSTOM
endif

! ==============================================================================
! Custom 2D picture file request
! ==============================================================================

dim stCustomPicFiles2D[]
bCustomPicFile2DExist = APPLICATION_QUERY ("LIBRARY_MANAGER", "USER_IMAGE_FILES", stCustomPicFiles2D)
if bCustomPicFile2DExist then
values "gs_picture_name_2D" stCustomPicFiles2D, CUSTOM
endif
```

--------------------------------

### Using the ADD command in 3D-Skript

Source: https://www.selfgdl.de/1_ko_trafos/3d_komplex/add

Demonstrates shifting the local origin before creating a secondary object.

```3D-Skript
SPHERE 1  
ADD 1,-1,1  
SPHERE 0.1
```

--------------------------------

### CALC_LENGTH_UNIT Usage Example

Source: https://www.selfgdl.de/diverses/umgebung/request/calc_length_unit

Example demonstrating how to retrieve the unit format and apply it using the STR() function.

```ArchiCAD GDL
format = ""  
zahl = 60.55  
dimension="CALC_LENGTH_UNIT"  
sts = REQUEST (dimension, "",format)  
TEXT2 0, 0, dimension + " [" + format +"] " + STR (format, zahl)
```

--------------------------------

### CPRISM_ Syntax Example

Source: https://www.selfgdl.de/3d-elemente/prismen/cprism_

Example usage of the CPRISM_ command defining a 5-point polygon with specific materials and height.

```GDL
cPRISM_ mat1, mat2, mat3,  
5, hoehe,  
0.09018407444346, 0.1300486114107, 15,   
0.1496727606566, 0.0666970940918, 15,   
0.2479013117735, 0.1327473267394, 79,   
0.2075295173439, 0.1742262714591, 900,   
0.176373659764, 0.2230084114181, 3079
```

--------------------------------

### Basic PUT Usage Examples

Source: https://www.selfgdl.de/diverses/pufferspeicher/put

Demonstrates storing single and multiple values in the buffer memory and retrieving them.

```text
PUT 1.5
PUT 2*5, SIN(30)
PRINT GET(3)
```

--------------------------------

### POLY2_B Usage Example

Source: https://www.selfgdl.de/2d-elemente-2/polygone/poly2_b

A practical example demonstrating the definition of a polygon with 11 vertices and specific hatch/pen settings.

```GDL
POLY2_B 11,1+2,5,15,  
0,0,1, 1,0,1, 1,1,0, 0.5,1.7,0, 0,1,1, 0,0,-1,  
0.2,0.2,1, 0.8,0.2,1, 0.8,1,1, 0.2,1,1, 0.2,0.2,-1
```

--------------------------------

### Retrieve and display property names

Source: https://www.selfgdl.de/diverses/umgebung/request/assocel_properties

Example demonstrating how to query property components and iterate through the results using a loop.

```GDL
DIM wert[]   
s=0.5  
  
sts = REQUEST ("ASSOCEL_PROPERTIES", "iscomp, code, name", anzahl, wert)  
  
IF anzahl THEN  
  
FOR i = 3 TO anzahl STEP 3  
TEXT2 0,0, wert[i] ! name   
ADD2 0,-s   
NEXT i   
  
ELSE  
  
TEXT2 0,0, "Keine Eigenschaften verfügbar."  
  
ENDIF
```

--------------------------------

### OPEN ("DateTime", "", format)

Source: https://www.selfgdl.de/addons/date-time/open-2

Initializes the DateTime addon and assigns it to a channel for subsequent data retrieval.

```APIDOC
## OPEN ("DateTime", "", format)

### Description
Opens a channel to read the system date and time. The returned channel number is assigned to the specified variable.

### Syntax
kanal = OPEN ("DateTime", "", format)

### Parameters
- **kanal** (integer) - The channel identifier assigned to the addon.
- **format** (string) - A format string defining the output structure using specifiers like %Y (year), %m (month), %d (day), %H (hour), %M (minute), and %S (second).

### Example
kanal = OPEN ("DateTime", "", "%Y-%m-%d")
sts = INPUT (kanal, "", "", datum)
CLOSE 1
PRINT datum
! Output: 2021-04-18
```

--------------------------------

### ADDGROUP Syntax Example

Source: https://www.selfgdl.de/3d-basic/solidbefehle/addgroup

Demonstrates defining two groups, 'Kugel' and 'Kiste', and merging them into a new group using ADDGROUP.

```3D-Skript
halb = 0.5  
  
GROUP "Kugel"  
ADDZ halb/3  
MULY 0.25  
MATERIAL "Glas Normalglas"  
SPHERE halb  
ENDGROUP  
  
GROUP "Kiste"  
ADD -halb,-halb/4,-2*halb/3  
MATERIAL "Natur Eis"  
BLOCK 2*halb,halb/2,2*halb/3  
ENDGROUP  
  
summe=ADDGROUP("Kugel","Kiste")  
  
PLACEGROUP summe
```

--------------------------------

### SPLINE2A Usage Example

Source: https://www.selfgdl.de/2d-elemente-2/zeichnungselemente/spline2a

Example demonstrating the use of SPLINE2A within a loop to create a thread-like curve structure.

```ArchiCAD GDL
a=0.05 ! Schraubenlänge  
b=0.01/2 ! Schraubenkopfdurchmesser  
  
! Schraubenlinie  
POLY2 5,1, 0,a-b, -b,a, b,a, 0,a-b, 0,0  
  
g=b*0.7 ! Gewindebreite  
l=g/9 ! Halbe Tangentenlänge  
  
! Gewindekurven  
FOR i=g TO a-b-g STEP g  
  
SPLINE2A 5, 0,  
-g/3, i-g*0.6, 140, l, l,  
-g/2, i-g*0.4, 90, l, l,  
0, i, 0, l*2, l*2,  
g/2, i+g*0.4, 90, l, l,  
g/3, i+g*0.6, 140, l, l  
  
NEXT i
```

--------------------------------

### Basic BINARY command usage

Source: https://www.selfgdl.de/3d-basic/diverse/binary

Example of invoking the BINARY command with specific mode and section parameters.

```GDL
BINARY 2,1
```

--------------------------------

### PARAGRAPH Command Crash Example

Source: https://www.selfgdl.de/attribute/text/paragraph

Example of a PARAGRAPH block that causes a crash in ArchiCAD 9 due to missing text definition.

```GDL
PARAGRAPH "Absatz01" 2, 0, 0, 0, 1
ENDPARAGRAPH
```
Tokens:
Raw