information-system/diagrams/C4_Context.puml

' convert it with additional command line argument -DRELATIVE_INCLUDE="relative/absolute" to use locally
!if %variable_exists("RELATIVE_INCLUDE")
  !include ./C4.puml
!else
  !include https://raw.githubusercontent.com/plantuml-stdlib/C4-PlantUML/master/C4.puml
!endif

' Scope: A single software system.
' Primary elements: The software system in scope.
' Supporting elements: People and software systems directly connected to the software system in scope.
' Intended audience: Everybody, both technical and non-technical people, inside and outside of the software development team.

' Colors
' ##################################

!$PERSON_FONT_COLOR ?= $ELEMENT_FONT_COLOR
!$PERSON_BG_COLOR ?= "#08427B"
!$PERSON_BORDER_COLOR ?= "#073B6F"

!$EXTERNAL_PERSON_FONT_COLOR ?= $ELEMENT_FONT_COLOR
!$EXTERNAL_PERSON_BG_COLOR ?= "#686868"
!$EXTERNAL_PERSON_BORDER_COLOR ?= "#8A8A8A"

!$SYSTEM_FONT_COLOR ?= $ELEMENT_FONT_COLOR
!$SYSTEM_BG_COLOR ?= "#1168BD"
!$SYSTEM_BORDER_COLOR ?= "#3C7FC0"

!$SYSTEM_BOUNDARY_COLOR ?= $BOUNDARY_COLOR
!$SYSTEM_BOUNDARY_BG_COLOR ?= $BOUNDARY_BG_COLOR
!$SYSTEM_BOUNDARY_BORDER_STYLE ?= $BOUNDARY_BORDER_STYLE

!$EXTERNAL_SYSTEM_FONT_COLOR ?= $ELEMENT_FONT_COLOR
!$EXTERNAL_SYSTEM_BG_COLOR ?= "#999999"
!$EXTERNAL_SYSTEM_BORDER_COLOR ?= "#8A8A8A"

!$ENTERPRISE_BOUNDARY_COLOR ?= $BOUNDARY_COLOR
!$ENTERPRISE_BOUNDARY_BG_COLOR ?= $BOUNDARY_BG_COLOR
!$ENTERPRISE_BOUNDARY_BORDER_STYLE ?= $BOUNDARY_BORDER_STYLE

' Labels
' ##################################

!$PERSON_LEGEND_TEXT ?= "person"
!$EXTERNAL_PERSON_LEGEND_TEXT ?= "external person"

!$SYSTEM_LEGEND_TEXT ?= "system"
!$SYSTEM_BOUNDARY_TYPE ?= "system"
!$SYSTEM_BOUNDARY_LEGEND_TEXT ?= "system boundary"
!$EXTERNAL_SYSTEM_LEGEND_TEXT ?= "external system"

!$ENTERPRISE_BOUNDARY_TYPE ?= "enterprise"
!$ENTERPRISE_BOUNDARY_LEGEND_TEXT ?= "enterprise boundary"

' Styling
' ##################################

UpdateElementStyle("person", $PERSON_BG_COLOR, $PERSON_FONT_COLOR, $PERSON_BORDER_COLOR, $shape=$DEFAULT_SHAPE, $legendText="$PERSON_LEGEND_TEXT")
UpdateElementStyle("external_person", $EXTERNAL_PERSON_BG_COLOR, $EXTERNAL_PERSON_FONT_COLOR, $EXTERNAL_PERSON_BORDER_COLOR, $shape=$DEFAULT_SHAPE, $legendText="$EXTERNAL_PERSON_LEGEND_TEXT")
UpdateElementStyle("system", $SYSTEM_BG_COLOR, $SYSTEM_FONT_COLOR, $SYSTEM_BORDER_COLOR, $shape=$DEFAULT_SHAPE, $legendText="$SYSTEM_LEGEND_TEXT")
UpdateElementStyle("external_system", $EXTERNAL_SYSTEM_BG_COLOR, $EXTERNAL_SYSTEM_FONT_COLOR, $EXTERNAL_SYSTEM_BORDER_COLOR, $shape=$DEFAULT_SHAPE, $legendText="$EXTERNAL_SYSTEM_LEGEND_TEXT")

UpdateBoundaryStyle("system", $bgColor=$SYSTEM_BOUNDARY_BG_COLOR, $fontColor=$SYSTEM_BOUNDARY_COLOR, $borderColor=$SYSTEM_BOUNDARY_COLOR, $type="$SYSTEM_BOUNDARY_TYPE", $shape=$DEFAULT_SHAPE, $legendText="$SYSTEM_BOUNDARY_LEGEND_TEXT")
UpdateBoundaryStyle("enterprise", $bgColor=$ENTERPRISE_BOUNDARY_BG_COLOR, $fontColor=$ENTERPRISE_BOUNDARY_COLOR, $borderColor=$ENTERPRISE_BOUNDARY_COLOR, $type="$ENTERPRISE_BOUNDARY_TYPE", $shape=$DEFAULT_SHAPE, $legendText="$ENTERPRISE_BOUNDARY_LEGEND_TEXT")

' shortcuts with default colors
!unquoted procedure AddPersonTag($tagStereo, $bgColor="", $fontColor="", $borderColor="", $shadowing="", $shape="", $sprite="", $legendText="", $legendSprite="", $type="", $borderStyle="", $borderThickness="")
  $addElementTagInclReuse("person", $tagStereo, $bgColor, $fontColor, $borderColor, $shadowing, $shape, $sprite, $type, $legendText, $legendSprite, $borderStyle, $borderThickness)
!endprocedure
!unquoted procedure AddExternalPersonTag($tagStereo, $bgColor="", $fontColor="", $borderColor="", $shadowing="", $shape="", $sprite="", $legendText="", $legendSprite="", $type="", $borderStyle="", $borderThickness="")
  $addElementTagInclReuse("external_person", $tagStereo, $bgColor, $fontColor, $borderColor, $shadowing, $shape, $sprite, $type, $legendText, $legendSprite, $borderStyle, $borderThickness)
!endprocedure
!unquoted procedure AddSystemTag($tagStereo, $bgColor="", $fontColor="", $borderColor="", $shadowing="", $shape="", $sprite="", $legendText="", $legendSprite="", $type="", $borderStyle="", $borderThickness="")
  $addElementTagInclReuse("system", $tagStereo, $bgColor, $fontColor, $borderColor, $shadowing, $shape, $sprite, $type, $legendText, $legendSprite, $borderStyle, $borderThickness)
!endprocedure
!unquoted procedure AddExternalSystemTag($tagStereo, $bgColor="", $fontColor="", $borderColor="", $shadowing="", $shape="", $sprite="", $legendText="", $legendSprite="", $type="", $borderStyle="", $borderThickness="")
  $addElementTagInclReuse("external_system", $tagStereo, $bgColor, $fontColor, $borderColor, $shadowing, $shape, $sprite, $type, $legendText, $legendSprite, $borderStyle, $borderThickness)
!endprocedure

!unquoted procedure UpdateEnterpriseBoundaryStyle($bgColor=$ENTERPRISE_BOUNDARY_BG_COLOR, $fontColor=$ENTERPRISE_BOUNDARY_COLOR, $borderColor=$ENTERPRISE_BOUNDARY_COLOR, $shadowing="", $shape="", $type="Enterprise", $legendText="", $borderStyle="", $borderThickness="", $sprite="", $legendSprite="")
  UpdateBoundaryStyle("enterprise", $bgColor, $fontColor, $borderColor, $shadowing, $shape, $type, $legendText, $borderStyle, $borderThickness, $sprite, $legendSprite)
!endprocedure
!unquoted procedure UpdateSystemBoundaryStyle($bgColor=$SYSTEM_BOUNDARY_BG_COLOR, $fontColor=$SYSTEM_BOUNDARY_COLOR, $borderColor=$SYSTEM_BOUNDARY_COLOR, $shadowing="", $shape="", $type="System", $legendText="", $borderStyle="", $borderThickness="", $sprite="", $legendSprite="")
  UpdateBoundaryStyle("system", $bgColor, $fontColor, $borderColor, $shadowing, $shape, $type, $legendText, $borderStyle, $borderThickness, $sprite, $legendSprite)
!endprocedure

' Sprites
' ##################################

sprite $person [48x48/16] {
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0000000000000000006EFFFFFFFFB3000000000000000000
00000000000000001CFFFFFFFFFFFF700000000000000000
0000000000000001EFFFFFFFFFFFFFF80000000000000000
000000000000000CFFFFFFFFFFFFFFFF6000000000000000
000000000000007FFFFFFFFFFFFFFFFFF100000000000000
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00000000000006FFFFFFFFFFFFFFFFFFFF00000000000000
0000000000000BFFFFFFFFFFFFFFFFFFFF40000000000000
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0000000000000FFFFFFFFFFFFFFFFFFFFF80000000000000
0000000000000FFFFFFFFFFFFFFFFFFFFF80000000000000
0000000000000DFFFFFFFFFFFFFFFFFFFF60000000000000
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000000000000007FFFFFFFFFFFFFFFFFF100000000000000
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0000000000000001DFFFFFFFFFFFFFF70000000000000000
00000000000000000BFFFFFFFFFFFF500000000000000000
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000000000000000000000000000000000000000000000000
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000000000000025788300000000005886410000000000000
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0000000004EFFFFFFFFFFFFFFFFFFFFFFFFFFB1000000000
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000000BFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5000000
000003FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD000000
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00000DFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF600000
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00001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB00000
00001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB00000
00001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB00000
00001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA00000
00000EFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF700000
000006FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE100000
0000008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD3000000
000000014555555555555555555555555555555300000000
000000000000000000000000000000000000000000000000
000000000000000000000000000000000000000000000000
}

sprite $person2 [48x48/16] {
0000000000000000000049BCCA7200000000000000000000
0000000000000000006EFFFFFFFFB3000000000000000000
00000000000000001CFFFFFFFFFFFF700000000000000000
0000000000000001EFFFFFFFFFFFFFF80000000000000000
000000000000000CFFFFFFFFFFFFFFFF6000000000000000
000000000000007FFFFFFFFFFFFFFFFFF100000000000000
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00000000000000EFFFFFFFFFFFFFFFFFF800000000000000
000000000000007FFFFFFFFFFFFFFFFFF100000000000000
000000000000000BFFFFFFFFFFFFFFFF5000000000000000
0000000000000001DFFFFFFFFFFFFFF70000000000000000
00000000000000000BFFFFFFFFFFFF500000000000000000
0000000000000000005DFFFFFFFFA1000000000000000000
0000000000000000000037ABB96100000000000000000000
000000000002578888300000000005888864100000000000
0000000007DFFFFFFFFD9643347BFFFFFFFFFB4000000000
00000004EFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB10000000
0000007FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD2000000
000006FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE100000
00003FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB00000
0000BFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF50000
0003FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD0000
0009FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF2000
000DFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6000
000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB000
001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB000
001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFB000
001FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFA000
000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
000DFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6000
0009FFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFFF2000
0003FFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFFD0000
0000BFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFF50000
00003FFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFB00000
000006FFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFE100000
0000007FFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFD2000000
00000004EFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFB10000000
0000000007DF8FFFFFFFFFFFFFFFFFFFFFF8FB4000000000
000000000002578888888888888888888864100000000000
}

sprite $robot [48x48/16] {
000000000000000000000000000000000000000000000000
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000000000005BFFFFFFFFFFFFFFFFFFFFFE9100000000000
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0000000007FFFFFFFFFFFFFFFFFFFFFFFFFFFE1000000000
000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000000000
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000000005FFFFFFFFFFFFFFFFFFFFFFFFFFFFFD000000000
000000005FFFFFFFFFFFFFFFFFFFFFFFFFFFFFE000000000
000000005FFFFFFFFFFFFFFFFFFFFFFFFFFFFFE000000000
000699405FFFFFFC427FFFFFFFFFC427FFFFFFE009982000
008FFF705FFFFFE10006FFFFFFFE00007FFFFFE00FFFF100
00CFFF705FFFFFA00001FFFFFFF900002FFFFFE00FFFF500
00DFFF705FFFFFB00002FFFFFFFA00003FFFFFE00FFFF500
00DFFF705FFFFFF4000AFFFFFFFF3000BFFFFFE00FFFF500
00DFFF705FFFFFFFA8DFFFFFFFFFFA8DFFFFFFE00FFFF500
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00DFFF705FFFFFFFFFFFFFFFFFFFFFFFFFFFFFE00FFFF500
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00CFFF705FFFFFF87777777777777777CFFFFFE00FFFF500
008FFF705FFFFFF100000000000000009FFFFFE00FFFF100
000699405FFFFFF76666666666666666CFFFFFE009982000
000000005FFFFFFFFFFFFFFFFFFFFFFFFFFFFFE000000000
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0000000005FFFFFFFFFFFFFFFFFFFFFFFFFFFD0000000000
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000000000000000000000000000000000000000000000000
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}

sprite $robot2 [48x48/16] {
000000000000000088888888888888880000000000000000
000000000000000AFFFFFFFFFFFFFFFFA000000000000000
00000000000000CFFFFFFFFFFFFFFFFFFC00000000000000
00000000000004EFFFFFFFFFFFFFFFFFFE40000000000000
0000000000000AFFFFFFFFFFFFFFFFFFFFA0000000000000
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00000000008FF8FFFFFFFFFFFFFFFFFFFF8FF80000000000
00000000000888FFFFFFFFFFFFFFFFFFFF88800000000000
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00000000000004CFFFFFFFFFFFFFFFFFFC40000000000000
000000488888848CFFFFFFFFFFFFFFFFC848888884000000
00000CFFFFFFFFC888888888888888888CFFFFFFFFC00000
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0000CFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC0000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
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0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF8000
0008FFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFFF8000
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0008FFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFFF8000
0000CFFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFFC0000
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00000CFFFFFF8FFFFFFFFFFFFFFFFFFFFFF8FFFFFFC00000
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000000000000000000000000000000000000000000000000
}

' Layout
' ##################################

SetDefaultLegendEntries("person\nsystem\nexternal_person\nexternal_system\nenterprise_boundary\nsystem_boundary\nboundary")

!procedure LAYOUT_WITH_LEGEND()
hide stereotype
legend right
|<color:$LEGEND_TITLE_COLOR>**Legend**</color> |
|<$PERSON_BG_COLOR> person |
|<$SYSTEM_BG_COLOR> system|
|<$EXTERNAL_PERSON_BG_COLOR> external person |
|<$EXTERNAL_SYSTEM_BG_COLOR> external system |
endlegend
!endprocedure

!global $defaultPersonSprite = "person"
!$dummy = $restoreEmpty("person", "sprite", $defaultPersonSprite, %true())
UpdateElementStyle("person")
' workaround of plantuml.jar bug - person overwrites external_person setting
!$dummy = $restoreEmpty("external_person", "sprite", $defaultPersonSprite, %true())
UpdateElementStyle("external_person")
!global $portraitPerson = "false"

!procedure $clearPersonRestore()
  !$dummy = $clearRestore("person", "sprite")
  !$dummy = $clearRestore("person", "legendSprite")
  %set_variable_value("$" + "person" + "ElementTagSprite", "")
  UpdateElementStyle("person")
  ' workaround of plantuml.jar bug - person overwrites external_person setting
  !$dummy = $clearRestore("external_person", "sprite")
  !$dummy = $clearRestore("external_person", "legendSprite")
  %set_variable_value("$" + "external_person" + "ElementTagSprite", "")
  UpdateElementStyle("external_person")
!endprocedure

!procedure HIDE_PERSON_SPRITE()
  !$defaultPersonSprite = ""
  !$portraitPerson = "false"
  $clearPersonRestore()
!endprocedure

!unquoted procedure SHOW_PERSON_SPRITE($sprite="")
  !if ($sprite == "")
    !$defaultPersonSprite = "person"
  !else
    !$defaultPersonSprite = $sprite
  !endif
  !$dummy = $restoreEmpty("person", "sprite", $defaultPersonSprite, %true())
  UpdateElementStyle("person")
  ' workaround of plantuml.jar bug - person overwrites external_person setting
  !$dummy = $restoreEmpty("external_person", "sprite", $defaultPersonSprite, %true())
  UpdateElementStyle("external_person")
  !$portraitPerson = "false"
!endprocedure

!unquoted procedure SHOW_PERSON_PORTRAIT()
  !$defaultPersonSprite = ""
  !$portraitPerson = "portrait"
  $clearPersonRestore()
!endprocedure

!unquoted procedure SHOW_PERSON_OUTLINE()
  !$defaultPersonSprite = ""
  !$portraitPerson = "outline"
  $clearPersonRestore()
!endprocedure

' Elements
' ##################################

!function $getPerson($label, $type, $descr, $sprite)
  !if ($sprite == "") && ($defaultPersonSprite != "")
    !$sprite = $defaultPersonSprite
  !endif
  !return $getElementBase($label, $type, $descr, $sprite)
!endfunction

!unquoted procedure Person($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
!$sprite=$toElementArg($sprite, $tags, "ElementTagSprite", "person")
' $type reuses $techn definition of $tags
!$type=$toElementArg($type, $tags, "ElementTagTechn", "person")
!if ($portraitPerson == "portrait") && ($sprite == "")
actor "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("person", $tags) as $alias $getLink($link)
!elseif ($portraitPerson == "outline") && ($sprite == "")
person "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("person", $tags) as $alias $getLink($link)
!else
rectangle "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("person", $tags) as $alias $getLink($link)
!endif
!endprocedure

!unquoted procedure Person_Ext($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
!$sprite=$toElementArg($sprite, $tags, "ElementTagSprite", "external_person")
' $type reuses $techn definition of $tags
!$type=$toElementArg($type, $tags, "ElementTagTechn", "external_person")
!if ($portraitPerson == "portrait") && ($sprite == "")
actor "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("external_person", $tags) as $alias $getLink($link)
!elseif ($portraitPerson == "outline") && ($sprite == "")
person "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("external_person", $tags) as $alias $getLink($link)
!else
rectangle "$getPerson($label, $type, $descr, $sprite)$getProps()" $toStereos("external_person", $tags) as $alias $getLink($link)
!endif
!endprocedure

!unquoted procedure System($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="", $baseShape="rectangle")
  ' $type reuses $techn definition of $tags
  $getElementLine($baseShape, "system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

!unquoted procedure SystemDb($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
  ' $type reuses $techn definition of $tags
  $getElementLine("database", "system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

!unquoted procedure SystemQueue($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
  ' $type reuses $techn definition of $tags
  $getElementLine("queue", "system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

!unquoted procedure System_Ext($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="", $baseShape="rectangle")
  ' $type reuses $techn definition of $tags
  $getElementLine($baseShape , "external_system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

!unquoted procedure SystemDb_Ext($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
  ' $type reuses $techn definition of $tags
  $getElementLine("database", "external_system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

!unquoted procedure SystemQueue_Ext($alias, $label, $descr="", $sprite="", $tags="", $link="", $type="")
  ' $type reuses $techn definition of $tags
  $getElementLine("queue", "external_system", $alias, $label, $type, $descr, $sprite, $tags, $link)
!endprocedure

' Boundaries
' ##################################

!unquoted procedure Enterprise_Boundary($alias, $label, $tags="", $link="", $descr = "")
  !if ($tags != "")
    !$allTags = $tags + '+enterprise'
  !else
    !$allTags = 'enterprise'
  !endif
  ' $type defined via $tag style
  Boundary($alias, $label, "", $allTags, $link, $descr)
!endprocedure

!unquoted procedure System_Boundary($alias, $label, $tags="", $link="", $descr = "")
  !if ($tags != "")
    !$allTags = $tags + '+system'
  !else
    !$allTags = 'system'
  !endif
  ' $type defined via $tag style
  Boundary($alias, $label, "", $allTags, $link, $descr)
!endprocedure