View source for Custom LDraw File Syntax Additions

Sometimes, [[App Developer|authors]] of LDraw-related [[software]] add special custom syntax elements to the [[LDraw file format]].

This can create various problems when
* the semantics of such syntax changes between software versions
* different software interprets them differently
* files get widespread which make use of that custom syntax, without it being a standard.

For that reason, doing so in general is a Bad Idea (TM).

However, this in the past has happend quite in some instances.

This page tries to list all the existing custom syntax elements.

== [[MLCad]] ==

<code> ROTSTEP (&lt;x-angle&gt; &lt;y-angle&gt; &lt;z-angle&gt; [(REL| ADD | ABS)] | END)</code>

<code> BACKGROUND &lt;filename&gt;</code>

<code> BUFEXCHG (A-H) (STORE | RETRIEVE)</code>

<code> GHOST &lt;LDRAW line&gt;</code>

<code> GROUP &lt;n> &lt;name&gt;</code>

<code> MLCAD BGT &lt;group name&gt;</code>

<code> MLCAD HIDE</code>

<code> MLCAD SKIP_BEGIN</code>

<code> MLCAD SKIP_END</code>

<code> ROTATION CENTER &lt;x&gt; &lt;y&gt; &lt;z&gt; "&lt;name&gt;"</code>

<code> ROTATION CONFIG &lt;Rotation ID&gt; &lt;Visible Flag&gt;</code>

<code> ROTATION AXLE</code>

<code> MLCAD SPRING</code>

<code> MLCAD FLEXHOSE</code>

<code> MLCAD RUBBER_BELT</code>

== [[LPub]] ==

=== LPub Statements ===

<code> LPUB PLI BEGIN SUB=LPUB PLI BEGIN SUB</code>

<code> LPUB PLI BEGIN IGN=LPUB PLI BEGIN IGN</code>

<code> LPUB END=PLIST END</code>

<code> -=-</code>

<code> BI BEGIN GRAYED=BI BEGIN GRAYED</code>

<code> BI END=BI END</code>

<code> LPUB GROUP REMOVE=LPUB GROUP REMOVE</code>

=== LPub Page Statements ===

<code> SIZE=LPUB PAGE SIZE</code>

<code> PLI (YES|NO)=LPUB PAGE PLI (YES|NO)</code>

<code> -=-</code>

<code> BACKGROUND TRANS=LPUB PAGE BACKGROUND TRANS</code>

<code> BACKGROUND color=LPUB PAGE BACKGROUND color</code>

<code> BACKGROUND [STRETCH] png_image_name=LPUB PAGE BACKGROUND [STRETCH]</code>

<code> png_image_name</code>

<code> -=-</code>

<code> BORDER SQUARE=LPUB PAGE BORDER SQUARE</code>

<code> BORDER ROUND=LPUB PAGE BORDER ROUND</code>

<code> BORDER MARGINS x_margin y_margin=LPUB PAGE BORDER MARGINS x_margin y_margin</code>

<code> -=-</code>

<code> NUMBER MARGINS x_margin y_margin=LPUB PAGE NUMBER MARGINS x_margin y_margin</code>

=== LPub Assembly Statements ===

<code> MARGINS x_margin y_margin=LPUB ASSEM MARGINS x_margin y_margin</code>

<code> -=-</code>

<code> PLACEMENT corner PAGE=LPUB ASSEM PLACEMENT corner PAGE</code>

<code> PLACEMENT edge PAGE=LPUB ASSEM PLACEMENT edge PAGE</code>

<code> PLACEMENT CENTER PAGE=LPUB ASSEM PLACEMENT CENTER PAGE</code>

<code> PLACEMENT OFFSET x_offset y_offset=LPUB ASSEM PLACEMENT OFFSET x_offset</code>

<code> y_offset</code>

=== LPub PLI Layout Statements ===

<code> PART MARGINS x y=LPUB PLI PART MARGINS x y</code>

<code> MARGINS x y=LPUB PLI MARGINS x y</code>

<code> -=-</code>

<code> PLACEMENT CENTER PAGE=LPUB PLI PLACEMENT CENTER PAGE</code>

<code> PLACEMENT edge PAGE=LPUB PLI PLACEMENT edge PAGE</code>

<code> PLACEMENT CENTER ASSEM INSIDE=LPUB PLI PLACEMENT CENTER ASSEM INSIDE</code>

<code> PLACEMENT corner ASSEM INSIDE=LPUB PLI PLACEMENT corner ASSEM INSIDE</code>

<code> PLACEMENT edge ASSEM INSIDE=LPUB PLI PLACEMENT edge ASSEM INSIDE</code>

<code> PLACEMENT corner ASSEM OUTSIDE=LPUB PLI PLACEMENT corner ASSEM OUTSIDE</code>

<code> PLACEMENT edge justification ASSEM OUTSIDE=LPUB PLI PLACEMENT edge</code>

<code> justification ASSEM OUTSIDE</code>

<code> PLACEMENT OFFSET x_offset y_offset=LPUB PLI PLACEMENT OFFSET x_offset</code>

<code> y_offset</code>

<code> -=-</code>

<code> BORDER SQUARE color thickness=LPUB PLI BORDER SQUARE color thickness</code>

<code> BORDER ROUND color thickness radius=LPUB PLI BORDER ROUND color</code>

<code> thickness radius</code>

<code> BORDERLESS=LPUB PLI BORDERLESS</code>

<code> BORDER MARGINS x y=LPUB PLI BORDER MARGINS x y</code>

<code> -=-</code>

<code> BACKGROUND TRANS=LPUB PLI BACKGROUND TRANS</code>

<code> BACKGROUND color=LPUB PLI BACKGROUND color</code>

<code> BACKGROUND [STRETCH] fname=LPUB PLI BACKGROUND [STRETCH] fname</code>

<code> -=-</code>

<code> CONSTRAIN AREA=LPUB PLI CONSTRAIN AREA</code>

<code> CONSTRAIN SQUARE=LPUB PLI CONSTRAIN SQUARE</code>

<code> CONSTRAIN WIDTH width=LPUB PLI CONSTRAIN WIDTH width</code>

<code> CONSTRAIN HEIGHT height=LPUB PLI CONSTRAIN HEIGHT height</code>

<code> CONSTRAIN COLS cols=LPUB PLI CONSTRAIN COLS cols</code>

=== LPub Callout Statements ===

<code> MARGINS x y=LPUB CALLOUT MARGINS x y=</code>

<code> HORIZONTAL=LPUB CALLOUT HORIZONTAL</code>

<code> VERTICAL=LPUB CALLOUT VERTICAL</code>

<code> SEPARATOR seperator_color separator_width=LPUB CALLOUT SEPARATOR</code>

<code> seperator_color separator_width</code>

<code> -=-</code>

<code> BORDER SQUARE color thickness=LPUB CALLOUT BORDER SQUARE color thickness</code>

<code> BORDER ROUND color thickness radius=LPUB CALLOUT BORDER ROUND color</code>

<code> thickness radius</code>

<code> BORDER MARGINS x y=LPUB CALLOUT BORDER MARGINS x y</code>

<code> BORDERLESS=LPUB CALLOUT BORDERLESS</code>

<code> -=-</code>

<code> BACKGROUND TRANS=LPUB CALLOUT BACKGROUND TRANS</code>

<code> BACKGROUND color=LPUB CALLOUT BACKGROUND color</code>

<code> BACKGROUND [STRETCH] fname=LPUB CALLOUT BACKGROUND [STRETCH] fname</code>

<code> -=-</code>

<code> BEGIN=LPUB CALLOUT BEGIN=LPUB CALLOUT BEGIN=LPUB CALLOUT BEGIN</code>

<code> END=LPUB CALLOUT END=LPUB CALLOUT END=LPUB CALLOUT END</code>

<code> DIVIDER=LPUB CALLOUT DIVIDER</code>

<code> -=-</code>

<code> INSTANCE_COUNT MARGINS x y=LPUB CALLOUT INSTANCE_COUNT MARGINS x y</code>

<code> INSTANCE_COUNT PLACEMENT corner CALLOUT preposition=LPUB CALLOUT</code>

<code> INSTANCE_COUNT PLACEMENT corner CALLOUT preposition</code>

<code> INSTANCE_COUNT PLACEMENT edge CALLOUT INSIDE=LPUB CALLOUT INSTANCE_COUNT</code>

<code> PLACEMENT edge CALLOUT INSIDE</code>

<code> INSTANCE_COUNT PLACEMENT horiz justification CALLOUT OUTSIDE=LPUB</code>

<code> CALLOUT INSTANCE_COUNT PLACEMENT horiz justification CALLOUT OUTSIDE</code>

<code> INSTANCE_COUNT PLACEMENT vert justification CALLOUT OUTSIDE=LPUB CALLOUT</code>

<code> INSTANCE_COUNT PLACEMENT vert justification CALLOUT OUTSIDE</code>

<code> -=-</code>

<code> PLACEMENT CENTER PAGE=LPUB CALLOUT PLACEMENT CENTER PAGE</code>

<code> PLACEMENT corner PAGE=LPUB CALLOUT PLACEMENT corner PAGE</code>

<code> PLACEMENT edge PAGE=LPUB CALLOUT PLACEMENT edge PAGE</code>

<code> PLACEMENT CENTER ASSEM INSIDE=LPUB CALLOUT PLACEMENT CENTER ASSEM INSIDE</code>

<code> PLACEMENT corner ASSEM INSIDE=LPUB CALLOUT PLACEMENT corner ASSEM INSIDE</code>

<code> PLACEMENT edge ASSEM INSIDE=LPUB CALLOUT PLACEMENT edge ASSEM INSIDE</code>

<code> PLACEMENT corner ASSEM OUTSIDE=LPUB CALLOUT PLACEMENT corner ASSEM OUTSIDE</code>

<code> PLACEMENT edge justification ASSEM OUTSIDE=LPUB CALLOUT PLACEMENT edge</code>

<code> justification ASSEM OUTSIDE</code>

<code> PLACEMENT OFFSET x_offset y_offset=LPUB CALLOUT PLACEMENT OFFSET</code>

<code> x_offset y_offset</code>

<code> -=-</code>

<code> POINTER BASE base=LPUB CALLOUT POINTER BASE base</code>

<code> POINTER placement loc assem_x assem_y=</code>

=== LPub Step Number Statements ===

<code> PLACEMENT CENTER PAGE=LPUB STEP_NUMBER PLACEMENT CENTER PAGE</code>

<code> PLACEMENT corner PAGE=LPUB STEP_NUMBER PLACEMENT corner PAGE</code>

<code> PLACEMENT edge PAGE=LPUB STEP_NUMBER PLACEMENT edge PAGE</code>

<code> PLACEMENT CENTER ASSEM INSIDE=LPUB STEP_NUMBER PLACEMENT CENTER ASSEM INSIDE</code>

<code> PLACEMENT corner ASSEM INSIDE=LPUB STEP_NUMBER PLACEMENT corner ASSEM INSIDE</code>

<code> PLACEMENT edge ASSEM INSIDE=LPUB STEP_NUMBER PLACEMENT edge ASSEM INSIDE</code>

<code> PLACEMENT corner PLI=LPUB STEP_NUMBER PLACEMENT corner PLI</code>

<code> PLACEMENT edge justification PLI=LPUB STEP_NUMBER PLACEMENT edge</code>

<code> justification PLI</code>

<code> PLACEMENT corner ASSEM OUTSIDE=LPUB STEP_NUMBER PLACEMENT corner ASSEM</code>

<code> OUTSIDE</code>

<code> PLACEMENT edge justification ASSEM OUTSIDE=LPUB STEP_NUMBER PLACEMENT</code>

<code> edge justification ASSEM OUTSIDE</code>

=== LPub Multi-Step Number Statements ===

<code> VERTICAL=LPUB MULTI_STEP VERTICAL</code>

<code> HORIZONTAL=LPUB MULTI_STEP HORIZONTAL</code>

<code> MARGINS x y=LPUB MULTI_STEP MARGINS x y</code>

<code> SEPARATOR seperator_color separator_width=LPUB MULTI_STEP SEPARATOR</code>

<code> seperator_color separator_width</code>

<code> BEGIN=LPUB MULTI_STEP BEGIN</code>

<code> DIVIDER=LPUB MULTI_STEP DIVIDER</code>

<code> END=LPUB MULTI_STEP END</code>

=== LPub Bill Of Material Statements ===

<code> PART MARGINS x y=LPUB BOM PART MARGINS x y</code>

<code> MARGINS x y=LPUB BOM MARGINS x y</code>

<code> BEGIN IGN=LPUB BOM BEGIN IGN</code>

<code> END=LPUB BOM END</code>

<code> -=-</code>

<code> BORDER SQUARE color thickness=LPUB BOM BORDER SQUARE color thickness</code>

<code> BORDER ROUND color thickness radius=LPUB BOM BORDER ROUND color</code>

<code> thickness radius</code>

<code> BORDERLESS=LPUB BOM BORDERLESS</code>

<code> BORDER MARGINS x y=LPUB BOM BORDER MARGINS x y</code>

<code> -=-</code>

<code> BACKGROUND TRANS=LPUB BOM BACKGROUND TRANS</code>

<code> BACKGROUND color=LPUB BOM BACKGROUND color</code>

<code> BACKGROUND [STRETCH] fname=LPUB BOM BACKGROUND [STRETCH] fname</code>

<code> -=-</code>

<code> CONSTRAIN AREA=LPUB BOM CONSTRAIN AREA</code>

<code> CONSTRAIN SQUARE=LPUB BOM CONSTRAIN SQUARE</code>

<code> CONSTRAIN WIDTH width=LPUB BOM CONSTRAIN WIDTH width</code>

<code> CONSTRAIN HEIGHT height=LPUB BOM CONSTRAIN HEIGHT height</code>

<code> CONSTRAIN COLS cols=LPUB BOM CONSTRAIN COLS cols</code>

<code> -=-</code>

<code> SORT WIDTH=LPUB BOM SORT WIDTH</code>

<code> PACK SUBS=LPUB BOM PACK SUBS</code>

== [[LSynth]] ==

<code>SYNTH BEGIN (RIBBED_TUBE |</code>

<code>             FLEXIBLE_TUBE |</code>

<code>             FLEX_CABLE |</code>

<code>             RIGID_TUBE |</code>

<code>             ELECTRIC_CABLE |</code>

<code>             PNEUMATIC_TUBE |</code>

<code>             FLEXIBLE_AXLE |</code>

<code>             FIBER_OPTIC_CABLE |</code>

<code>             RUBBER_BAND |</code>

<code>             CHAIN |</code>

<code>             PLASTIC_TREAD |</code>

<code>             RUBBER_TREAD)</code>
</pre>
<code> SYNTH END</code>

<code> SYNTH (INSIDE | OUTSIDE | CROSS | SHOW | HIDE)</code>

<code> SYNTHESIZED BEGIN</code>

<code> SYNTHESIZED END</code>

== [[L3P]] ==

<code> L3P IFPOV</code>

<code> L3P IFNOTPOV</code>

<code> L3P ELSEPOV</code>

<code> L3P ENDPOV</code>

== [[LDLite]] ==

<code> COLOR</code>

<code> COLOUR</code>

<code> TRANSLATE</code>

<code> ROTATE</code>

<code> SCALE</code>

<code> TRANSFORM</code>

<code> COLORNAME</code>

<code> COLOURNAME</code>

<code> POINT</code>

<code> MATRIX</code>

<code> CMDLINE &lt;line&gt;</code>

[[Category:LDraw Files Syntax]]