Scaling part of a PlantUML diagram - plantuml

Question

Scaling is controlled by the scale keyword. I'm curious if it's possible to scale part of a PlantUML diagram somehow or at the very least: scale the font size for part of a diagram.
It doesn't seem like scale may be scoped to part of a diagram (and I have not found any examples that suggest that is possible). Conceivably it might be used in the following manner, but this example scales the entire image:
#startuml
package "Some Group" {
scale 0.5
HTTP - [First Component]
[Another Component]
}
node "Other Groups" {
FTP - [Second Component]
[First Component] --> FTP
}
#enduml

Answer 1

I do not think currently there is a way to achieve it. From the source code of the PlantUML scale command:
protected CommandExecutionResult executeArg(AbstractPSystem diagram, LineLocation location, RegexResult arg) {
double scale = Double.parseDouble(arg.get("SCALE", 0));
if (scale == 0) {
return CommandExecutionResult.error("Scale cannot be zero");
}
if (arg.get("DIV", 0) != null) {
final double div = Double.parseDouble(arg.get("DIV", 0));
if (div == 0) {
return CommandExecutionResult.error("Scale cannot be zero");
}
scale /= div;
}
diagram.setScale(new ScaleSimple(scale));
return CommandExecutionResult.ok();
}
The location of scale is not used, and PlantUML just sets the scale of diagram by diagram.setScale(new ScaleSimple(scale)).
You can verify this kind of action by:
#startuml
package "Some Group" {
scale 0.5
HTTP - [First Component]
[Another Component]
}
node "Other Groups" {
scale 5
FTP - [Second Component]
[First Component] --> FTP
}
#enduml
The scale 0.5 is overridden by the scale 5 command.