We can add models here :-)

[jpadfield]

Hi just as an example the mermaid model system that I have used before and am using now for several projects can be pasted straight into issues and discussions here on GitHub:

So, just in case it is useful here is an example:

flowchart LR
classDef object stroke:#2C5D98,fill:#2C5D98,color:white,rx:5px,ry:5px;
classDef url stroke:#2C5D98,fill:white,color:#2C5D98,rx:5px,ry:5px;
classDef literal stroke:black,fill:#f0f0e0,color:black,rx:2px,ry:2px,max-width:100px;
classDef type stroke:#502604,fill:#FAB565,color:#502604,rx:20px,ry:20px;;
classDef thing stroke:#2C5D98,fill:#D0E5FF,color:#2C5D98,rx:5px,ry:5px;


O0("This Model")
class O0 object;

O1("https://linked.art/ns/v1/linked-art.json")
class O1 url;
click O1 "https://linked.art/ns/v1/linked-art.json"
O0["This Model"] -- has context -->O1["https://linked.art/ns/v1/linked-art.json"]

O2("lae:object/33")
class O2 literal;

O3("HumanMadeObject")
class O3 type;
O2["lae:object/33"] -- type -->O3["HumanMadeObject"]

O4("Example Painting")
class O4 literal;
O2["lae:object/33"] -- _label -->O4["Example Painting"]

O5("aat:300033618")
class O5 type;
click O5 "http://vocab.getty.edu/aat/300033618" "Link to: http://vocab.getty.edu ..."; 
O2["lae:object/33"] -- classified_as -->O5["aat:300033618"]

O6("Type-5")
class O6 literal;
O5["aat:300033618"] -- type -->O6["Type"]

O7("Painting")
class O7 literal;
O5["aat:300033618"] -- _label -->O7["Painting"]

O8("aat:300435443")
class O8 type;
click O8 "http://vocab.getty.edu/aat/300435443" "Link to: http://vocab.getty.edu ..."; 
O5["aat:300033618"] -- classified_as -->O8["aat:300435443"]

O9("Type-8")
class O9 literal;
O8["aat:300435443"] -- type -->O9["Type"]

O10("Type of Work")
class O10 literal;
O8["aat:300435443"] -- _label -->O10["Type of Work"]

O11("aat:300133025")
class O11 type;
click O11 "http://vocab.getty.edu/aat/300133025" "Link to: http://vocab.getty.edu ..."; 
O2["lae:object/33"] -- classified_as -->O11["aat:300133025"]

O12("Type-11")
class O12 literal;
O11["aat:300133025"] -- type -->O12["Type"]

O13("Artwork")
class O13 literal;
O11["aat:300133025"] -- _label -->O13["Artwork"]

O14("_BN1")
class O14 thing;
O2["lae:object/33"] -- referred_to_by -->O14["_BN1"]

O15("LinguisticObject")
class O15 type;
O14["_BN1"] -- type -->O15["LinguisticObject"]

O16("aat:300435416")
class O16 type;
click O16 "http://vocab.getty.edu/aat/300435416" "Link to: http://vocab.getty.edu ..."; 
O14["_BN1"] -- classified_as -->O16["aat:300435416"]

O17("Type-16")
class O17 literal;
O16["aat:300435416"] -- type -->O17["Type"]

O18("Description")
class O18 literal;
O16["aat:300435416"] -- _label -->O18["Description"]

O19("aat:300418049")
class O19 type;
click O19 "http://vocab.getty.edu/aat/300418049" "Link to: http://vocab.getty.edu ..."; 
O16["aat:300435416"] -- classified_as -->O19["aat:300418049"]

O20("Type-19")
class O20 literal;
O19["aat:300418049"] -- type -->O20["Type"]

O21("Brief Text")
class O21 literal;
O19["aat:300418049"] -- _label -->O21["Brief Text"]

O22("The Example Painting is a great example of exampleness.")
class O22 literal;
O14["_BN1"] -- content -->O22["The Example Painting is a great example of exampleness."]
;

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And this only took me 5 minutes or so to create from the details on the linked.art website: https://linked.art/model/object/aboutness/