Thank you very much. I got this far:

tabSize = buffer.getTabSize();
Macros.message(view, "Tab size is: " + tabSize);

if (tabSize == 4) {
tabSize = 8;
} else {
tabSize = 4;
}

buffer.setProperty("tabSize", tabSize);
Macros.message(view, "Tab size is now: " + tabSize);

The problem though is that the view doesn't update. I can see the new tab size setting in the buffer's options dialog, and the view will update if I press OK there, but how do I get the view to update as part of my macro? I'm looking around through the class definitions but haven't found a way yet.

Thanks!

Ernest

There must be a better and more direct way, but the following lines do the job. They are the code of the macro Reset_TextArea.bsh:

view.splitVertically();
view.unsplitCurrent();

Robert

Thanks!