https://plantuml.com/sequence-diagram PlantUml is a text-based way of drawing many kinds of diagrams.

If your diagram is stored in a separate file, use :include-plantuml: <path> :include-plantuml: demo.plantuml @startuml package "Some Group" { HTTP - [First Component] [Another Component] } node "Other Groups" { FTP - [Second Component] [First Component] --> FTP } cloud { [Example 1] } database "MySql" { folder "This is my folder" { [Folder 3] } frame "Foo" { [Frame 4] } } [Another Component] --> [Example 1] [Example 1] --> [Folder 3] [Folder 3] --> [Frame 4] @enduml

@startgantt [Task1] lasts 4 days then [Task1.1] lasts 4 days [Task1.2] starts at [Task1]'s end and lasts 7 days [Task2] lasts 5 days then [Task2.1] lasts 4 days [MaxTaskEnd] happens at [Task1.1]'s end [MaxTaskEnd] happens at [Task1.2]'s end [MaxTaskEnd] happens at [Task2.1]'s end @endgantt