kroki

kroki-graphviz

digraph G {
  a -> b [dir=both color="red:blue"]
  c -> d [dir=none color="green:red;0.25:blue"]
}

kroki-plantuml

@startuml
clock   "Clock_0"   as C0 with period 50
clock   "Clock_1"   as C1 with period 50 pulse 15 offset 10
binary  "Binary"  as B
concise "Concise" as C
robust  "Robust"  as R
analog  "Analog"  as A

@0
C is Idle
R is Idle
A is 0

@100
B is high
C is Waiting
R is Processing
A is 3

@300
R is Waiting
A is 1
@enduml

kroki-symbolator

module demo_device #(
    //# {{}}
    parameter SIZE = 8,
    parameter RESET_ACTIVE_LEVEL = 1
) (
    //# {{clocks|Clocking}}
    input wire clock,
    //# {{control|Control signals}}
    input wire reset,
    input wire enable,
    //# {{data|Data ports}}
    input wire [SIZE-1:0] data_in,
    output wire [SIZE-1:0] data_out
);
  // ...
endmodule

pikchr-demo1

pikchr-demo2

svgbob-demo

svgbob-otherdemo